{"title":"Mammal-like Reptiles  Synapsids \/ Pelycosauria","description":"\u003cb\u003eSynapsids\u003c\/b\u003e\u003csup id=\"cite_ref-2\" class=\"reference\"\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Synapsid#cite_note-2\"\u003e[a]\u003c\/a\u003e\u003c\/sup\u003e\u003cspan\u003e—not to be confused with \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Therapsid\" title=\"Therapsid\"\u003etherapsids\u003c\/a\u003e\u003cspan\u003e,\u003c\/span\u003e\u003csup id=\"cite_ref-3\" class=\"reference\"\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Synapsid#cite_note-3\"\u003e[b]\u003c\/a\u003e\u003c\/sup\u003e\u003cspan\u003e which are a subordinate group to synapsids—are a group of animals that includes \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Mammal\" title=\"Mammal\"\u003emammals\u003c\/a\u003e\u003cspan\u003e and every animal more closely related to mammals than to the other members of the \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Amniote\" title=\"Amniote\"\u003eamniote\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Clade\" title=\"Clade\"\u003eclade\u003c\/a\u003e\u003cspan\u003e, such as \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Reptile\" title=\"Reptile\"\u003ereptiles\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Birds\" class=\"mw-redirect\" title=\"Birds\"\u003ebirds\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003csup id=\"cite_ref-4\" class=\"reference\"\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Synapsid#cite_note-4\"\u003e[2]\u003c\/a\u003e\u003c\/sup\u003e\u003cspan\u003e They are easily separated from other amniotes by having a \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Skull#Fenestrae\" title=\"Skull\"\u003etemporal fenestra\u003c\/a\u003e\u003cspan\u003e, an opening low in the \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Skull_roof\" title=\"Skull roof\"\u003eskull roof\u003c\/a\u003e\u003cspan\u003e behind each eye, leaving a \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Zygomatic_arch\" title=\"Zygomatic arch\"\u003ebony arch\u003c\/a\u003e\u003cspan\u003e beneath each; this accounts for their name.\u003c\/span\u003e\u003csup id=\"cite_ref-Romer_5-0\" class=\"reference\"\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Synapsid#cite_note-Romer-5\"\u003e[3]\u003c\/a\u003e\u003c\/sup\u003e\u003cspan\u003e Primitive synapsids are usually called \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Pelycosaur\" title=\"Pelycosaur\"\u003epelycosaurs\u003c\/a\u003e\u003cspan\u003e or pelycosaur-\u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Evolutionary_grade\" title=\"Evolutionary grade\"\u003egrade\u003c\/a\u003e\u003cspan\u003e synapsids. This informal term consists of all synapsids that are not therapsids, a monophyletic, more advanced, mammal-like group. The non-mammalian synapsids were described as \u003c\/span\u003e\u003cb\u003emammal-like reptiles\u003c\/b\u003e\u003cspan\u003e in classical systematics, but this misleading terminology is no longer in use\u003c\/span\u003e\u003csup id=\"cite_ref-Carroll397_6-0\" class=\"reference\"\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Synapsid#cite_note-Carroll397-6\"\u003e[4]\u003c\/a\u003e\u003c\/sup\u003e\u003csup id=\"cite_ref-Benton122_7-0\" class=\"reference\"\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Synapsid#cite_note-Benton122-7\"\u003e[5]\u003c\/a\u003e\u003c\/sup\u003e\u003cspan\u003e as synapsids as a whole are no longer considered reptiles.\u003c\/span\u003e\u003csup id=\"cite_ref-8\" class=\"reference\"\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Synapsid#cite_note-8\"\u003e[6]\u003c\/a\u003e\u003c\/sup\u003e\u003cspan\u003e They are now more correctly referred to as \u003c\/span\u003e\u003cb\u003estem mammals\u003c\/b\u003e\u003cspan\u003e or \u003c\/span\u003e\u003cb\u003eproto-mammals\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e","products":[{"product_id":"dimetrodon-skeleton-cast-replica","title":"Dimetrodon skeleton cast replica","description":"\u003cp\u003e\u003cb\u003eDimetrodon, pronounced (die-MET-roh-don) which means (\"two measures of teeth\" is so named because it had a large skull with two different types of teeth; shearing teeth and sharp canine teeth, unlike reptiles. Dentition showing this differentiation of teeth is called heterodonty).\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDimetrodon has a large sail which was probably used to regulate body temperature; the surface area would allow it to warm up or cool off more efficiently. Dimetrodon was not a dinosaur but a pelycosaur, an early synapsid (mammal-like reptile).\u003c\/p\u003e\n\u003cp\u003eDimetrodon skeleton resin \u0026amp; fiberglass\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-family: Arial, Helvetica, Verdana, 'Sans Serif'; font-size: large;\" size=\"4\" face=\"Arial, Helvetica, Verdana, Sans Serif\"\u003e\u003cb\u003eSkeleton measures 6.5 feet long (This will be shipped by freight truck. Crate size: 48L x 40W x 66H, Weight: 180 lbs)\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-family: Arial, Helvetica, Verdana, 'Sans Serif'; font-size: large;\" size=\"4\" face=\"Arial, Helvetica, Verdana, Sans Serif\"\u003e\u003cb\u003eThe skeleton is available as a one-sided cast  $2,495 or as a complete two-sided skeleton for\u003c\/b\u003e\u003c\/span\u003e\u003cspan style=\"font-family: Arial, Helvetica, Verdana, 'Sans Serif'; font-size: large;\" size=\"4\" face=\"Arial, Helvetica, Verdana, Sans Serif\"\u003e\u003cb\u003e\u003cspan\u003e $3,495 plus shipping\u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis item may not be in stock and may require some production time. Please check with us if you need this by a certain date we are more than happy to work with you and your schedule.\u003c\/p\u003e\n\u003cp\u003eIf you would like the head or legs positioned differently we are able to do that as well.\u003c\/p\u003e\n\u003cp\u003ePlease note that shipping on this item can not be calculated in the shopping cart.\u003c\/p\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"2 Sided Skeleton","offer_id":40341254439103,"sku":"","price":3495.0,"currency_code":"USD","in_stock":true},{"title":"2,495","offer_id":40341241823423,"sku":"","price":3495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/dimetrodon_skeleton_cast_replica_9.png?v=1622965018"},{"product_id":"dimetrodon-skeleton-cast-replica-2","title":"Dimetrodon skeleton cast replica 3","description":"\u003cp\u003e\u003cb\u003eDimetrodon, pronounced (die-MET-roh-don) which means (\"two measures of teeth\" so named because it had a large skull with two different types of teeth; shearing teeth and sharp canine teeth, unlike reptiles. Dentition showing this differentiation of teeth is called heterodonty).\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eDimetrodon has a large sail which was probably used to regulate body temperature; the surface area would allow it to warm up or cool off more efficiently. Dimetrodon was not a dinosaur but a pelycosaur, an early synapsid (mammal-like reptile).\u003c\/p\u003e\n\u003cp\u003eDimetrodon skeleton resin \u0026amp; fiberglass\u003c\/p\u003e\n\u003cdiv data-v-467baf8f=\"\" data-v-37c2cfce=\"\" class=\"product-header\"\u003e\n\u003cdiv data-v-dd72499a=\"\" data-v-467baf8f=\"\" class=\"product-title\"\u003e\n\u003ch3 data-v-409a4820=\"\" data-v-dd72499a=\"\" class=\"w-product-title font--step-2 font--primary text-component\" title=\"Dimetrodon limbatus Skeleton Mounted\/Crated\"\u003eDimetrodon limbatus Skeleton Mounted\/Crated\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003ch3 data-v-409a4820=\"\" data-v-06560d6c=\"\" data-v-467baf8f=\"\" class=\"product-price__wrapper font--step-2 font--primary text-component\" color=\"\"\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-37c2cfce=\"\"\u003e\n\u003cdiv data-v-ab1ca44a=\"\" class=\"w-wrapper product-description\"\u003e\n\u003cdiv data-v-14e840bc=\"\" class=\"w-product-description__wrapper\" data-v-ab1ca44a=\"\" positiontop=\"true\"\u003e\n\u003cdiv data-v-409a4820=\"\" data-v-14e840bc=\"\" class=\"w-product-description font--small font--secondary text-component\" style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" content=\"DIMETRODON Limbatus HAYASHIBARA SKELETON. Mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Hayashibara Science Museum.\u0026lt;br \/\u0026gt;Measurement. 132in length, 48in height .\u0026lt;br \/\u0026gt;\u0026lt;br \/\u0026gt;AA113\u0026lt;br \/\u0026gt;\"\u003e\u003cspan data-v-14e840bc=\"\" data-v-409a4820=\"\"\u003eDIMETRODON Limbatus HAYASHIBARA SKELETON. Mammal-like reptile of Permian Texas.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-v-409a4820=\"\" data-v-14e840bc=\"\" class=\"w-product-description font--small font--secondary text-component\" style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" content=\"DIMETRODON Limbatus HAYASHIBARA SKELETON. Mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Hayashibara Science Museum.\u0026lt;br \/\u0026gt;Measurement. 132in length, 48in height .\u0026lt;br \/\u0026gt;\u0026lt;br \/\u0026gt;AA113\u0026lt;br \/\u0026gt;\"\u003e\u003cspan data-v-14e840bc=\"\" data-v-409a4820=\"\"\u003e\u003cbr\u003eHayashibara Science Museum.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-v-409a4820=\"\" data-v-14e840bc=\"\" class=\"w-product-description font--small font--secondary text-component\" style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" content=\"DIMETRODON Limbatus HAYASHIBARA SKELETON. Mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Hayashibara Science Museum.\u0026lt;br \/\u0026gt;Measurement. 132in length, 48in height .\u0026lt;br \/\u0026gt;\u0026lt;br \/\u0026gt;AA113\u0026lt;br \/\u0026gt;\"\u003e\u003cspan data-v-14e840bc=\"\" data-v-409a4820=\"\"\u003e\u003cbr\u003eMeasurement. 132in length, 48in height .\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e Custom painting and mounting available. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003ePlease note that shipping on this item can not be calculated in the shopping cart.\u003c\/p\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":36344546164891,"sku":"","price":18650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/dimetrodonlimbatusskeletoncastreplica.jpg?v=1602397644"},{"product_id":"dimetrodon-skeleton-cast-replica-3","title":"Dimetrodon skeleton cast replica 2 BYU Specimen","description":"\u003cp\u003e\u003cb\u003eDimetrodon, pronounced (die-MET-roh-don) which means (\"two measures of teeth\" so named because it had a large skull with two different types of teeth; shearing teeth and sharp canine teeth, unlike reptiles. Dentition showing this differentiation of teeth is called heterodonty).\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eDimetrodon has a large sail which was probably used to regulate body temperature; the surface area would allow it to warm up or cool off more efficiently. Dimetrodon was not a dinosaur but a pelycosaur, an early synapsid (mammal-like reptile).\u003c\/p\u003e\n\u003cp\u003eDimetrodon skeleton resin \u0026amp; fiberglass\u003c\/p\u003e\n\u003cdiv data-v-467baf8f=\"\" data-v-37c2cfce=\"\" class=\"product-header\"\u003e\n\u003cdiv data-v-dd72499a=\"\" data-v-467baf8f=\"\" class=\"product-title\"\u003e\n\u003ch3 data-v-409a4820=\"\" data-v-dd72499a=\"\" class=\"w-product-title font--step-2 font--primary text-component\" title=\"Dimetrodon limbatus Skeleton Mounted\/Crated\"\u003eDimetrodon limbatus Skeleton Mounted\/Crated\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-header\" data-v-37c2cfce=\"\" data-v-467baf8f=\"\"\u003e\n\u003cdiv class=\"product-title\" data-v-467baf8f=\"\" data-v-dd72499a=\"\"\u003e\n\u003ch3 title=\"Dimetrodon limbatus Skeleton MOUNTED \/CRATED\" class=\"w-product-title font--step-2 font--primary text-component\" data-v-dd72499a=\"\" data-v-409a4820=\"\"\u003eDimetrodon limbatus BYU SKELETON Carnivorous mammal-like reptile of Permian Texas.\u003cbr\u003e\n\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-37c2cfce=\"\"\u003e\n\u003cdiv class=\"w-wrapper product-description\" data-v-ab1ca44a=\"\"\u003e\n\u003cdiv data-v-ab1ca44a=\"\" class=\"w-product-description__wrapper\" data-v-14e840bc=\"\" positiontop=\"true\"\u003e\n\u003cdiv style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" class=\"w-product-description font--small font--secondary text-component\" data-v-14e840bc=\"\" data-v-409a4820=\"\" content=\"Dimetrodon limbatus  BYU SKELETON Carnivorous mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Measurement, 88in.length,37in height,Back leg 37in With,  \u0026lt;br \/\u0026gt;Wood crate require , there is an extra charge $200\u0026lt;br \/\u0026gt;AA104\"\u003e\u003cspan data-v-409a4820=\"\" data-v-14e840bc=\"\"\u003eMeasurement, 88in.length,37in height,\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" class=\"w-product-description font--small font--secondary text-component\" data-v-14e840bc=\"\" data-v-409a4820=\"\" content=\"Dimetrodon limbatus  BYU SKELETON Carnivorous mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Measurement, 88in.length,37in height,Back leg 37in With,  \u0026lt;br \/\u0026gt;Wood crate require , there is an extra charge $200\u0026lt;br \/\u0026gt;AA104\"\u003e\u003cspan data-v-409a4820=\"\" data-v-14e840bc=\"\"\u003eBack legs have 37in width between them.\u003cbr\u003eWood crate require , there is an extra charge $200\u003cbr\u003eAA104\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-37c2cfce=\"\"\u003e\n\u003cdiv data-v-ab1ca44a=\"\" class=\"w-wrapper product-description\"\u003e\n\u003cdiv data-v-14e840bc=\"\" class=\"w-product-description__wrapper\" data-v-ab1ca44a=\"\" positiontop=\"true\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e Custom painting and mounting available. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003ePlease note that shipping on this item can not be calculated in the shopping cart.\u003c\/p\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":36344574804123,"sku":"","price":13000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/dimetrodonlimatusskeleton3.jpg?v=1602397964"},{"product_id":"dimetrodon-skull-cast-replica-1","title":"Dimetrodon skull cast replica #1","description":"\u003cp\u003e\u003cb\u003eDimetrodon, pronounced (die-MET-roh-don) which means (\"two measures of teeth\" so named because it had a large skull with two different types of teeth; shearing teeth and sharp canine teeth, unlike reptiles. Dentition showing this differentiation of teeth is called heterodonty).\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDimetrodon has a large sail which was probably used to regulate body temperature; the surface area would allow it to warm up or cool off more efficiently. Dimetrodon was not a dinosaur but a pelycosaur, an early synapsid (mammal-like reptile).\u003c\/p\u003e\n\u003cp\u003eDimetrodon skeleton resin \u0026amp; fiberglass\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimetrodon skull cast replica \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eCast in resin.\u003c\/p\u003e\n\u003cp\u003eThis skull measures 13x8x7.5 inches.\u003c\/p\u003e\n\u003cp\u003eThis is the same skull that we use in our skeleton.\u003c\/p\u003e\n\u003cp\u003eResin cast: $395.00\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: red;\" color=\"red\"\u003eSale $295\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePlease note that shipping on this item can not be calculated in the shopping cart.Please call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":36344640995483,"sku":"","price":295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/files\/background-editor_output_9b06401f-3bdb-4dac-a5f7-b0e2af781524.png?v=1751186005"},{"product_id":"dimetrodon-limbatus-skull-cast-replica-2","title":"Dimetrodon limbatus skull cast replica #3","description":"\u003cp\u003e\u003cb\u003eDimetrodon, pronounced (die-MET-roh-don) which means (\"two measures of teeth\" so named because it had a large skull with two different types of teeth; shearing teeth and sharp canine teeth, unlike reptiles. Dentition showing this differentiation of teeth is called heterodonty).\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eDimetrodon has a large sail which was probably used to regulate body temperature; the surface area would allow it to warm up or cool off more efficiently. Dimetrodon was not a dinosaur but a pelycosaur, an early synapsid (mammal-like reptile).\u003c\/p\u003e\n\u003cp\u003eDimetrodon skeleton resin \u0026amp; fiberglass\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimetrodon skull cast replica\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eCast in resin.\u003c\/p\u003e\n\u003cdiv class=\"product-header\" data-v-37c2cfce=\"\" data-v-467baf8f=\"\"\u003e\n\u003cdiv class=\"product-title\" data-v-467baf8f=\"\" data-v-dd72499a=\"\"\u003e\n\u003ch3 title=\"Dimetrodon limbatus Skull (BYU)\" class=\"w-product-title font--step-2 font--primary text-component\" data-v-dd72499a=\"\" data-v-409a4820=\"\"\u003eDimetrodon limbatus Skull (BYU)\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003ch3 color=\"\" class=\"product-price__wrapper font--step-2 font--primary text-component\" data-v-467baf8f=\"\" data-v-06560d6c=\"\" data-v-409a4820=\"\"\u003e\u003cspan class=\"font--product-price text-component\" data-v-06560d6c=\"\" data-v-409a4820=\"\"\u003e$504\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-37c2cfce=\"\"\u003e\n\u003cdiv class=\"w-wrapper product-description\" data-v-ab1ca44a=\"\"\u003e\n\u003cdiv data-v-ab1ca44a=\"\" class=\"w-product-description__wrapper\" data-v-14e840bc=\"\" positiontop=\"true\"\u003e\n\u003cdiv style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" class=\"w-product-description font--small font--secondary text-component\" data-v-14e840bc=\"\" data-v-409a4820=\"\" content=\"Dimetrodon limbatus BYU  Carnivorous mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Measurement, \u0026lt;br \/\u0026gt;S104\"\u003e\u003cspan data-v-409a4820=\"\" data-v-14e840bc=\"\"\u003eDimetrodon limbatus BYU Carnivorous mammal-like reptile of Permian Texas.\u003cbr\u003eMeasurement,\u003cbr\u003eS104\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease note that shipping on this item can not be calculated in the shopping cart.\u003c\/p\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":36344662851739,"sku":"","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/dimetrodon_limbatusskull_cast_3.jpg?v=1602398752"},{"product_id":"copy-of-dimetrodon-limbatus-skull-cast-replica-2","title":"Dimetrodon limbatus skull cast replica #2","description":"\u003cp\u003e\u003cb\u003eDimetrodon, pronounced (die-MET-roh-don) which means (\"two measures of teeth\" so named because it had a large skull with two different types of teeth; shearing teeth and sharp canine teeth, unlike reptiles. Dentition showing this differentiation of teeth is called heterodonty).\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eDimetrodon has a large sail which was probably used to regulate body temperature; the surface area would allow it to warm up or cool off more efficiently. Dimetrodon was not a dinosaur but a pelycosaur, an early synapsid (mammal-like reptile).\u003c\/p\u003e\n\u003cp\u003eDimetrodon skeleton resin \u0026amp; fiberglass\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimetrodon skull cast replica\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eCast in resin.\u003c\/p\u003e\n\u003cdiv class=\"product-header\" data-v-37c2cfce=\"\" data-v-467baf8f=\"\"\u003e\n\u003cdiv class=\"product-title\" data-v-467baf8f=\"\" data-v-dd72499a=\"\"\u003e\n\u003cdiv class=\"product-header\" data-v-37c2cfce=\"\" data-v-467baf8f=\"\"\u003e\n\u003cdiv class=\"product-title\" data-v-467baf8f=\"\" data-v-dd72499a=\"\"\u003e\n\u003ch3 title=\"Dimetrodon limbatus Skull (Hayashibara)\" class=\"w-product-title font--step-2 font--primary text-component\" data-v-dd72499a=\"\" data-v-409a4820=\"\"\u003eDimetrodon limbatus Skull (Hayashibara)\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003ch3 color=\"\" class=\"product-price__wrapper font--step-2 font--primary text-component\" data-v-467baf8f=\"\" data-v-06560d6c=\"\" data-v-409a4820=\"\"\u003e\u003cspan class=\"font--product-price text-component\" data-v-06560d6c=\"\" data-v-409a4820=\"\"\u003e$545.00\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-37c2cfce=\"\"\u003e\n\u003cdiv class=\"w-wrapper product-description\" data-v-ab1ca44a=\"\"\u003e\n\u003cdiv data-v-ab1ca44a=\"\" class=\"w-product-description__wrapper\" data-v-14e840bc=\"\" positiontop=\"true\"\u003e\n\u003cdiv style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" class=\"w-product-description font--small font--secondary text-component\" data-v-14e840bc=\"\" data-v-409a4820=\"\" content=\"DIMETRODON Limbatus HAYASHIBARA . Mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Hayashibara Science Museum.\u0026lt;br \/\u0026gt;Skull Length: 43cm (16.9in)\u0026lt;br \/\u0026gt;S113\"\u003e\u003cspan data-v-409a4820=\"\" data-v-14e840bc=\"\"\u003eDIMETRODON Limbatus HAYASHIBARA . Mammal-like reptile of Permian Texas.\u003cbr\u003eHayashibara Science Museum.\u003cbr\u003eSkull Length: 43cm (16.9in)\u003cbr\u003eS113\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003ePlease note that shipping on this item can not be calculated in the shopping cart.\u003c\/p\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":36344694243483,"sku":"","price":645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/dimetrodon_skull_cast_2.jpg?v=1602398868"},{"product_id":"chirotherium-footprint-track-cast-replica-foot-impression","title":"Chirotherium footprint track cast replica foot impression","description":"\u003cdiv class=\"XbtRGb qxsd NV5pMe yF5Gqd mod\" data-md=\"50\" lang=\"en-US\" data-hveid=\"CAUQAA\" data-ved=\"2ahUKEwiSkIW_kOntAhVivlkKHYqBBjQQkCkwDXoECAUQAA\"\u003e\n\u003cdiv class=\"PZPZlf hb8SAc\" data-attrid=\"description\" data-hveid=\"CAUQAQ\" data-ved=\"2ahUKEwiSkIW_kOntAhVivlkKHYqBBjQQziAoADANegQIBRAB\"\u003e\n\u003cdiv jscontroller=\"DGEKAc\" jsaction=\"SKAaMe:c0XUbe;rcuQ6b:npT2md\"\u003e\n\u003cdiv jscontroller=\"Bv441\" jsaction=\"rcuQ6b:npT2md\"\u003e\n\u003cdiv jsname=\"g7W7Ed\" jscontroller=\"DGEKAc\" class=\"kno-rdesc\" jsaction=\"seM7Qe:c0XUbe;Iigoee:c0XUbe;rcuQ6b:npT2md\"\u003e\n\u003cdiv\u003e\u003cspan\u003eChirotherium footprint cast replica\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eMoenkopi Formation. New Mexico, USA\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"XbtRGb qxsd NV5pMe yF5Gqd mod\" data-attrid=\"hw:\/collection\/organism_classifications:phylum raw\" data-md=\"1001\" lang=\"en-US\" data-hveid=\"CAQQAA\" data-ved=\"2ahUKEwiSkIW_kOntAhVivlkKHYqBBjQQkCkwDnoECAQQAA\"\u003e\n\u003cdiv class=\"Z1hOCe\"\u003e\n\u003cdiv class=\"zloOqf PZPZlf\" data-ved=\"2ahUKEwiSkIW_kOntAhVivlkKHYqBBjQQyxMoADAOegQIBBAB\"\u003e\n\u003cdiv class=\"rVusze\"\u003e\n\u003cspan class=\"w8qArf\"\u003ePhylum:\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"LrzXr kno-fv\"\u003eChordata\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"XbtRGb qxsd NV5pMe yF5Gqd mod\" data-attrid=\"kc:\/biology\/organism_classification:rank\" data-md=\"1001\" lang=\"en-US\" data-hveid=\"CAIQAA\" data-ved=\"2ahUKEwiSkIW_kOntAhVivlkKHYqBBjQQkCkwD3oECAIQAA\"\u003e\n\u003cdiv class=\"Z1hOCe\"\u003e\n\u003cdiv class=\"zloOqf PZPZlf\" data-ved=\"2ahUKEwiSkIW_kOntAhVivlkKHYqBBjQQyxMoADAPegQIAhAB\"\u003e\n\u003cdiv class=\"rVusze\"\u003e\n\u003cspan class=\"w8qArf\"\u003eRank:\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"LrzXr kno-fv\"\u003eGenus\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"XbtRGb qxsd NV5pMe yF5Gqd mod\" data-attrid=\"ss:\/webfacts:ichnofamili\" data-md=\"1001\" lang=\"en-US\" data-hveid=\"CAMQAA\" data-ved=\"2ahUKEwiSkIW_kOntAhVivlkKHYqBBjQQkCkwEHoECAMQAA\"\u003e\n\u003cdiv class=\"Z1hOCe\"\u003e\n\u003cdiv class=\"zloOqf PZPZlf\" data-ved=\"2ahUKEwiSkIW_kOntAhVivlkKHYqBBjQQyxMoADAQegQIAxAB\"\u003e\n\u003cdiv class=\"rVusze\"\u003e\n\u003cspan class=\"w8qArf\"\u003eIchnofamily:\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"LrzXr kno-fv\"\u003eChirotheriidae\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rVusze\"\u003e\u003cspan class=\"LrzXr kno-fv\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"rVusze\"\u003e\u003cspan class=\"LrzXr kno-fv\"\u003e\u003ci\u003e\u003cb\u003eChirotherium\u003c\/b\u003e\u003c\/i\u003e\u003cspan\u003e, also known as \u003c\/span\u003e\u003ci\u003e\u003cb\u003eCheirotherium\u003c\/b\u003e\u003c\/i\u003e\u003cspan\u003e (‘hand-beast’), is a \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Triassic\" title=\"Triassic\"\u003eTriassic\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Trace_fossil\" title=\"Trace fossil\"\u003etrace fossil\u003c\/a\u003e\u003cspan\u003e consisting of five-fingered (pentadactyle) footprints and whole tracks. These look, by coincidence, remarkably like the hands of apes and bears, with the outermost toe having evolved to extend out to the side like a thumb, although probably only functioning to provide a firmer grip in mud. \u003c\/span\u003e\u003ci\u003eChirotherium\u003c\/i\u003e\u003cspan\u003e tracks were first found in 1834 in Lower Triassic \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Sandstone\" title=\"Sandstone\"\u003esandstone\u003c\/a\u003e\u003cspan\u003e (\u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Buntsandstein\" title=\"Buntsandstein\"\u003eBuntsandstein\u003c\/a\u003e\u003cspan\u003e) in \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Thuringia\" title=\"Thuringia\"\u003eThuringia\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Germany\" title=\"Germany\"\u003eGermany\u003c\/a\u003e.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"rVusze\"\u003e\u003cspan class=\"LrzXr kno-fv\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"rVusze\"\u003e\u003cspan class=\"LrzXr kno-fv\"\u003e\u003cspan\u003eThe creatures who made the footprints and tracks were probably \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Pseudosuchia\" title=\"Pseudosuchia\"\u003epseudosuchian\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Archosaur\" title=\"Archosaur\"\u003earchosaurs\u003c\/a\u003e\u003cspan\u003e related to the ancestors of the \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Crocodile\" title=\"Crocodile\"\u003ecrocodiles\u003c\/a\u003e\u003cspan\u003e. They likely belonged to either \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Prestosuchidae\" title=\"Prestosuchidae\"\u003eprestosuchidae\u003c\/a\u003e\u003cspan\u003e or \u003c\/span\u003e\u003ca href=\"https:\/\/en.m.wikipedia.org\/wiki\/Rauisuchidae\" title=\"Rauisuchidae\"\u003erauisuchidae\u003c\/a\u003e\u003cspan\u003e groups, which were both large carnivores with semi-erect gaits.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":37857818443967,"sku":"","price":9.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/chirotherium_footprint_cast_replica.jpg?v=1761284065"},{"product_id":"xxx-skull-cast-replica","title":"Captorhinus skull cast replica #1","description":"\u003cp\u003eCaptorhinus fossil skull cast replica #1\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCaptorhinus is an extinct genus of captorhinid reptiles that lived during the Permian period. Its remains are known from Oklahoma, Texas, Europe, India, the Pedra de Fogo Formation, Parnaíba Basin, Brazil and the Madumabisa Mudstone, Zambia.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt was fairly small, around 12 inches in length and likely bore a resemblance to modern lizards. Captorhinus was one of the earliest and most primitive reptiles.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis skull was molded from an original fossil found in Texas\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFrom Texas. \u003c\/p\u003e\n\u003cp\u003ePermian\u003c\/p\u003e\n\u003cp\u003e.............................\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eAncient reptile Captorhinus could detach its tail to elude predators\u003c\/h1\u003e\n\u003cdiv class=\"story-info-top-row\"\u003e\n\u003cdiv class=\"author-wrapper\"\u003e\n\u003cp\u003eby This Study Was Possible Thanks To The Treasure Trove Of Fossils Available At The Cave Deposits Near Richards Spur, Okla. , University of Toronto\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eImagine a voracious carnivore sinking its teeth into the tail of a small reptile, anticipating a delicious lunch, when, in a flash, the reptile is gone and the carnivore is left holding a wiggling tail between its jaws.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003enew study by a University of Toronto research team led by Professor Robert Reisz and Ph.D. student Aaron LeBlanc shows how small reptiles that lived 289 million years ago could detach their tails to escape the grasp of predators – the oldest known example of such behaviour. The study was published March 5 in the open source journal\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eScientific Reports\u003c\/i\u003e.\u003c\/p\u003e\n\u003cp\u003eThe reptiles, called Captorhinus, weighed less than two kilograms – smaller than the predators of the time. They were abundant in terrestrial communities during the Early Permian period and are distant relatives of all the reptiles today.\u003c\/p\u003e\n\u003cp\u003eAs small omnivores and herbivores, Captorhinus and its relatives had to scrounge for food while avoiding being preyed upon by large, meat-eating amphibians and ancient relatives of mammals. \"One of the ways captorhinids could do this was by having breakable\u003cspan\u003e \u003c\/span\u003e\u003ca class=\"textTag\" href=\"https:\/\/phys.org\/tags\/tail\/\" rel=\"tag\" target=\"_top\"\u003etail\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca class=\"textTag\" href=\"https:\/\/phys.org\/tags\/vertebrae\/\" rel=\"tag\" target=\"_top\"\u003evertebrae\u003c\/a\u003e,\" says lead author LeBlanc. \"Like many present-day lizard species, such as skinks, that can detach their tails to escape or distract a predator, the middle of many tail vertebrae had cracks in them.\"\u003c\/p\u003e\n\u003cp\u003eIt is likely that these cracks acted like the perforated lines between two paper towel sheets, allowing vertebrae to break in half along planes of weakness. \"If a predator grabbed hold of one of these reptiles, the vertebra would break at the crack and the tail would drop off, allowing the captorhinid to escape relatively unharmed,\" says Reisz, a Distinguished Professor of biology at U of T Mississauga.\u003c\/p\u003e\n\u003cp\u003eThe authors note that being the only reptiles with such an escape strategy may have been a key to their success, because they were the most common reptiles of their time, and by the end of the Permian period 251 million years ago, captorhinids had dispersed across the ancient supercontinent of Pangaea. This trait disappeared from the fossil record when Captorhinus died out – and it re-evolved in lizards 70 million years ago.\u003c\/p\u003e\n\u003cp\u003eThe researchers were able to examine more than 70 tail vertebrae – both juveniles and adults – and partial tail skeletons with splits that ran through their vertebrae. They compared these skeletons to those of other reptilian relatives of captorhinids, but it appears that this ability is restricted to this family of reptiles in the Permian period.\u003c\/p\u003e\n\u003cp\u003eUsing various paleontological and histological techniques, the authors discovered that the cracks were features that formed naturally as the vertebrae were developing. Interestingly, the research team found that young captorhinids had well-formed cracks, while those in some adults tended to fuse up. This makes sense, since predation is much greater on young individuals and they need this ability to defend themselves.\u003c\/p\u003e\n\u003ch1\u003e\u003c\/h1\u003e","brand":"TaylorMadeFossils.com","offers":[{"title":"Default Title","offer_id":40457672130751,"sku":"","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/IMG_20210905_194031588.jpg?v=1631070163"},{"product_id":"captorhinus-skull-cast-replica-2","title":"Captorhinus skull cast replicas set of 2","description":"\u003cp\u003eCaptorhinus fossil skull cast replicas set of 2\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCaptorhinus is an extinct genus of captorhinid reptiles that lived during the Permian period. Its remains are known from Oklahoma, Texas, Europe, India, the Pedra de Fogo Formation, Parnaíba Basin, Brazil and the Madumabisa Mudstone, Zambia.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt was fairly small, around 12 inches in length and likely bore a resemblance to modern lizards. Captorhinus was one of the earliest and most primitive reptiles.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis skull was molded from an original fossil found in Texas\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFrom Texas. \u003c\/p\u003e\n\u003cp\u003ePermian\u003c\/p\u003e\n\u003cp\u003eThis listing is for 2 resin cast Captorhinus skulls.\u003c\/p\u003e\n\u003cp\u003eOne of the originals was collected in Texas and the other in Oklahoma.\u003c\/p\u003e\n\u003cp\u003eEach has nice details and are useful for study.\u003c\/p\u003e\n\u003cp\u003eWe can custom paint if desired. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e...........................\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eAncient reptile Captorhinus could detach its tail to elude predators\u003c\/h1\u003e\n\u003cdiv class=\"story-info-top-row\"\u003e\n\u003cdiv class=\"author-wrapper\"\u003e\n\u003cp\u003eby This Study Was Possible Thanks To The Treasure Trove Of Fossils Available At The Cave Deposits Near Richards Spur, Okla. , University of Toronto\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eImagine a voracious carnivore sinking its teeth into the tail of a small reptile, anticipating a delicious lunch, when, in a flash, the reptile is gone and the carnivore is left holding a wiggling tail between its jaws.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003enew study by a University of Toronto research team led by Professor Robert Reisz and Ph.D. student Aaron LeBlanc shows how small reptiles that lived 289 million years ago could detach their tails to escape the grasp of predators – the oldest known example of such behaviour. The study was published March 5 in the open source journal\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eScientific Reports\u003c\/i\u003e.\u003c\/p\u003e\n\u003cp\u003eThe reptiles, called Captorhinus, weighed less than two kilograms – smaller than the predators of the time. They were abundant in terrestrial communities during the Early Permian period and are distant relatives of all the reptiles today.\u003c\/p\u003e\n\u003cp\u003eAs small omnivores and herbivores, Captorhinus and its relatives had to scrounge for food while avoiding being preyed upon by large, meat-eating amphibians and ancient relatives of mammals. \"One of the ways captorhinids could do this was by having breakable\u003cspan\u003e \u003c\/span\u003e\u003ca class=\"textTag\" href=\"https:\/\/phys.org\/tags\/tail\/\" rel=\"tag\" target=\"_top\"\u003etail\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca class=\"textTag\" href=\"https:\/\/phys.org\/tags\/vertebrae\/\" rel=\"tag\" target=\"_top\"\u003evertebrae\u003c\/a\u003e,\" says lead author LeBlanc. \"Like many present-day lizard species, such as skinks, that can detach their tails to escape or distract a predator, the middle of many tail vertebrae had cracks in them.\"\u003c\/p\u003e\n\u003cp\u003eIt is likely that these cracks acted like the perforated lines between two paper towel sheets, allowing vertebrae to break in half along planes of weakness. \"If a predator grabbed hold of one of these reptiles, the vertebra would break at the crack and the tail would drop off, allowing the captorhinid to escape relatively unharmed,\" says Reisz, a Distinguished Professor of biology at U of T Mississauga.\u003c\/p\u003e\n\u003cp\u003eThe authors note that being the only reptiles with such an escape strategy may have been a key to their success, because they were the most common reptiles of their time, and by the end of the Permian period 251 million years ago, captorhinids had dispersed across the ancient supercontinent of Pangaea. This trait disappeared from the fossil record when Captorhinus died out – and it re-evolved in lizards 70 million years ago.\u003c\/p\u003e\n\u003cp\u003eThe researchers were able to examine more than 70 tail vertebrae – both juveniles and adults – and partial tail skeletons with splits that ran through their vertebrae. They compared these skeletons to those of other reptilian relatives of captorhinids, but it appears that this ability is restricted to this family of reptiles in the Permian period.\u003c\/p\u003e\n\u003cp\u003eUsing various paleontological and histological techniques, the authors discovered that the cracks were features that formed naturally as the vertebrae were developing. Interestingly, the research team found that young captorhinids had well-formed cracks, while those in some adults tended to fuse up. This makes sense, since predation is much greater on young individuals and they need this ability to defend themselves.\u003c\/p\u003e\n\u003ch1\u003e\u003c\/h1\u003e","brand":"TaylorMadeFossils.com","offers":[{"title":"Default Title","offer_id":40627764265151,"sku":"","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/Screenshot_20210907-171126.png?v=1639814637"},{"product_id":"dimetrodon-limbatus-claws-cast-replica-set-of-3","title":"Dimetrodon limbatus claws cast replica set of 2","description":"\u003cp\u003e\u003cb\u003eDimetrodon, pronounced (die-MET-roh-don) which means (\"two measures of teeth\" so named because it had a large skull with two different types of teeth; shearing teeth and sharp canine teeth, unlike reptiles. Dentition showing this differentiation of teeth is called heterodonty).\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDimetrodon has a large sail which was probably used to regulate body temperature; the surface area would allow it to warm up or cool off more efficiently. Dimetrodon was not a dinosaur but a pelycosaur, an early synapsid (mammal-like reptile).\u003c\/p\u003e\n\u003cp\u003eDimetrodon claws cast replicas resin\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimetrodon cast replica\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eCast in resin.\u003c\/p\u003e\n\u003cdiv class=\"product-header\" data-v-37c2cfce=\"\" data-v-467baf8f=\"\"\u003e\n\u003cdiv class=\"product-title\" data-v-467baf8f=\"\" data-v-dd72499a=\"\"\u003e\n\u003cdiv class=\"product-header\" data-v-37c2cfce=\"\" data-v-467baf8f=\"\"\u003e\n\u003cdiv class=\"product-title\" data-v-467baf8f=\"\" data-v-dd72499a=\"\"\u003e\n\u003ch3 title=\"Dimetrodon limbatus Skull (Hayashibara)\" class=\"w-product-title font--step-2 font--primary text-component\" data-v-dd72499a=\"\" data-v-409a4820=\"\"\u003eDimetrodon limbatus \u003c\/h3\u003e\n\u003c\/div\u003e\n\u003ch3 color=\"\" class=\"product-price__wrapper font--step-2 font--primary text-component\" data-v-467baf8f=\"\" data-v-06560d6c=\"\" data-v-409a4820=\"\"\u003e\u003cspan class=\"font--product-price text-component\" data-v-06560d6c=\"\" data-v-409a4820=\"\"\u003e$15.00\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv data-v-37c2cfce=\"\"\u003e\n\u003cdiv class=\"w-wrapper product-description\" data-v-ab1ca44a=\"\"\u003e\n\u003cdiv data-v-ab1ca44a=\"\" class=\"w-product-description__wrapper\" data-v-14e840bc=\"\" positiontop=\"true\"\u003e\n\u003cdiv style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" class=\"w-product-description font--small font--secondary text-component\" data-v-14e840bc=\"\" data-v-409a4820=\"\" content=\"DIMETRODON Limbatus HAYASHIBARA . Mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Hayashibara Science Museum.\u0026lt;br \/\u0026gt;Skull Length: 43cm (16.9in)\u0026lt;br \/\u0026gt;S113\"\u003e\u003cspan data-v-409a4820=\"\" data-v-14e840bc=\"\"\u003eDIMETRODON Limbatus \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" class=\"w-product-description font--small font--secondary text-component\" data-v-14e840bc=\"\" data-v-409a4820=\"\" content=\"DIMETRODON Limbatus HAYASHIBARA . Mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Hayashibara Science Museum.\u0026lt;br \/\u0026gt;Skull Length: 43cm (16.9in)\u0026lt;br \/\u0026gt;S113\"\u003e\u003cspan data-v-409a4820=\"\" data-v-14e840bc=\"\"\u003e Mammal-like reptile of Permian Texas.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":41147013169343,"sku":"","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/Screenshot_20230215_204931_eBay.jpg?v=1676515981"},{"product_id":"captorhinus-foot-leg-cast-replica","title":"Captorhinus foot leg cast replica","description":"\u003cp\u003eCaptorhinus fossil leg and foot cast replica \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCaptorhinus is an extinct genus of captorhinid reptiles that lived during the Permian period. Its remains are known from Oklahoma, Texas, Europe, India, the Pedra de Fogo Formation, Parnaíba Basin, Brazil and the Madumabisa Mudstone, Zambia.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt was fairly small, around 12 inches in length and likely bore a resemblance to modern lizards. Captorhinus was one of the earliest and most primitive reptiles.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis leg and foot were molded from an original fossil found in Oklahoma.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePermian\u003c\/p\u003e\n\u003cp\u003eCast measures: approximately 4 1\/2\" x 2 1\/4\" (approx 10.6 mm  x 6 mm.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e.............................\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eAncient reptile Captorhinus could detach its tail to elude predators\u003c\/h1\u003e\n\u003cdiv class=\"story-info-top-row\"\u003e\n\u003cdiv class=\"author-wrapper\"\u003e\n\u003cp\u003eby This Study Was Possible Thanks To The Treasure Trove Of Fossils Available At The Cave Deposits Near Richards Spur, Okla. , University of Toronto\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eImagine a voracious carnivore sinking its teeth into the tail of a small reptile, anticipating a delicious lunch, when, in a flash, the reptile is gone and the carnivore is left holding a wiggling tail between its jaws.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003enew study by a University of Toronto research team led by Professor Robert Reisz and Ph.D. student Aaron LeBlanc shows how small reptiles that lived 289 million years ago could detach their tails to escape the grasp of predators – the oldest known example of such behaviour. The study was published March 5 in the open source journal\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eScientific Reports\u003c\/i\u003e.\u003c\/p\u003e\n\u003cp\u003eThe reptiles, called Captorhinus, weighed less than two kilograms – smaller than the predators of the time. They were abundant in terrestrial communities during the Early Permian period and are distant relatives of all the reptiles today.\u003c\/p\u003e\n\u003cp\u003eAs small omnivores and herbivores, Captorhinus and its relatives had to scrounge for food while avoiding being preyed upon by large, meat-eating amphibians and ancient relatives of mammals. \"One of the ways captorhinids could do this was by having breakable\u003cspan\u003e \u003c\/span\u003e\u003ca class=\"textTag\" href=\"https:\/\/phys.org\/tags\/tail\/\" rel=\"tag\" target=\"_top\"\u003etail\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca class=\"textTag\" href=\"https:\/\/phys.org\/tags\/vertebrae\/\" rel=\"tag\" target=\"_top\"\u003evertebrae\u003c\/a\u003e,\" says lead author LeBlanc. \"Like many present-day lizard species, such as skinks, that can detach their tails to escape or distract a predator, the middle of many tail vertebrae had cracks in them.\"\u003c\/p\u003e\n\u003cp\u003eIt is likely that these cracks acted like the perforated lines between two paper towel sheets, allowing vertebrae to break in half along planes of weakness. \"If a predator grabbed hold of one of these reptiles, the vertebra would break at the crack and the tail would drop off, allowing the captorhinid to escape relatively unharmed,\" says Reisz, a Distinguished Professor of biology at U of T Mississauga.\u003c\/p\u003e\n\u003cp\u003eThe authors note that being the only reptiles with such an escape strategy may have been a key to their success, because they were the most common reptiles of their time, and by the end of the Permian period 251 million years ago, captorhinids had dispersed across the ancient supercontinent of Pangaea. This trait disappeared from the fossil record when Captorhinus died out – and it re-evolved in lizards 70 million years ago.\u003c\/p\u003e\n\u003cp\u003eThe researchers were able to examine more than 70 tail vertebrae – both juveniles and adults – and partial tail skeletons with splits that ran through their vertebrae. They compared these skeletons to those of other reptilian relatives of captorhinids, but it appears that this ability is restricted to this family of reptiles in the Permian period.\u003c\/p\u003e\n\u003cp\u003eUsing various paleontological and histological techniques, the authors discovered that the cracks were features that formed naturally as the vertebrae were developing. Interestingly, the research team found that young captorhinids had well-formed cracks, while those in some adults tended to fuse up. This makes sense, since predation is much greater on young individuals and they need this ability to defend themselves.\u003c\/p\u003e\n\u003ch1\u003e\u003c\/h1\u003e","brand":"TaylorMadeFossils.com","offers":[{"title":"Default Title","offer_id":41147035943103,"sku":null,"price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/Screenshot_20211219-054548.png?v=1639915403"},{"product_id":"byu-specimen","title":"Gorgonopsid mammal-like reptile - Replica Skull - education zoology paleontology","description":"\u003cp\u003e\u003cspan\u003eGorgonopsid Skull. Dinosaur fossil Replica.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBroomisaurus laticeps is an extinct genus of Gorgonopsia, mammal-like reptile from Late Permian. Location: waterfall Graff Reinet South Africa.\u003c\/p\u003e\n\u003cp\u003eMolded from an original UCB specimen\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003e* Skull size: 16 inch x 15 inch (41cm x 36cm)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":41453107085503,"sku":"","price":295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/s884858454442443682_p587_i1_w2048.jpg?v=1648323882"},{"product_id":"copy-of-dimetrodon-limbatus-claws-cast-replica-set-of-3","title":"Cynodont - Probainognathus jenseni Skull cast replica (2025)","description":"\u003cp\u003eBone Clones\u003c\/p\u003e\n\u003cdiv class=\"product-header\" data-v-37c2cfce=\"\" data-v-467baf8f=\"\"\u003e\n\u003cdiv class=\"product-title\" data-v-467baf8f=\"\" data-v-dd72499a=\"\"\u003e\n\u003cdiv data-v-37c2cfce=\"\"\u003e\n\u003cdiv class=\"w-wrapper product-description\" data-v-ab1ca44a=\"\"\u003e\n\u003cdiv data-v-ab1ca44a=\"\" class=\"w-product-description__wrapper\" data-v-14e840bc=\"\" positiontop=\"true\"\u003e\n\u003cdiv style=\"box-sizing: inherit; font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-family: var(--secondary-font); font-weight: var(--secondary-font-weight,400); margin-bottom: 16px;\" class=\"w-product-description font--small font--secondary text-component\" data-v-14e840bc=\"\" data-v-409a4820=\"\" content=\"DIMETRODON Limbatus HAYASHIBARA . Mammal-like reptile of Permian Texas.\u0026lt;br \/\u0026gt;Hayashibara Science Museum.\u0026lt;br \/\u0026gt;Skull Length: 43cm (16.9in)\u0026lt;br \/\u0026gt;S113\"\u003e\n\u003ch5 class=\"product-header\"\u003eCynodont - Probainognathus jenseni Skull\u003c\/h5\u003e\n\u003ch6\u003e\u003cspan class=\"sku\"\u003eCD-01\u003c\/span\u003e\u003c\/h6\u003e\n\u003ch6\u003eThis beautiful specimen was sculpted by Glenn T. Drewes, instructor of biology at San Bernardino Valley College in California. \u003cem style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); font-weight: var(--secondary-font-weight,400); letter-spacing: var(--letter-spacing);\"\u003eProbainognathus jenseni\u003c\/em\u003e\u003cspan style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); font-weight: var(--secondary-font-weight,400); letter-spacing: var(--letter-spacing);\"\u003e was a carnivorous mammal-like reptile from the family \u003c\/span\u003e\u003cem style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); font-weight: var(--secondary-font-weight,400); letter-spacing: var(--letter-spacing);\"\u003eChiniquodontidae\u003c\/em\u003e\u003cspan style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); font-weight: var(--secondary-font-weight,400); letter-spacing: var(--letter-spacing);\"\u003e and is the first animal to exhibit mammal-like features. Approximately the size of a large house cat, this animal lived in South America during the Middle and Upper Triassic. \u003c\/span\u003e \u003cem style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-weight: var(--secondary-font-weight,400);\"\u003eProbainognathus jenseni\u003c\/em\u003e\u003cspan style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-weight: var(--secondary-font-weight,400);\"\u003e is part of a group of cynodonts that first began to exhibit specialized teeth, jaw structure, and musculature toward a mammalian pattern. Specifically in jaw articulation, \u003c\/span\u003e\u003cem style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-weight: var(--secondary-font-weight,400);\"\u003eProbainognathus jenseni\u003c\/em\u003e\u003cspan style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing); font-weight: var(--secondary-font-weight,400);\"\u003e exhibits both reptilian and mammalian characteristics with the jaw articulating between the articular and quadrate bones and between the dentary and squamosal bones. This fossil is an excellent example of the transition between ancestral reptiles and mammals. \u003c\/span\u003e\u003cstrong style=\"font-family: var(--secondary-font); font-size: var(--font-step-minus-1-size); letter-spacing: var(--letter-spacing);\"\u003e2-part skull (separate cranium \u0026amp; jaw).\u003c\/strong\u003e\n\u003c\/h6\u003e\n\u003ctable class=\"product-description-table\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"title\"\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eCatalogue #\u003c\/td\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"info\"\u003e\n\u003ctd\u003eProbainognathus jenseni\u003c\/td\u003e\n\u003ctd\u003eCD-01\u003c\/td\u003e\n\u003ctd\u003e3 ½\" L x 2 ½\" W x 1 ½\" H\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":41791551275199,"sku":"","price":212.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/products\/product-2423-main-main-big-1420766000.jpg?v=1657436995"},{"product_id":"greererpeton-burkemorani-skull-large-cast-replica","title":"Greererpeton burkemorani, skull, large cast replica","description":"\u003ch1 data-v-0d4a2734=\"\" data-v-38a83a30=\"\" class=\"text-component w-product-title 📚19-7-0uGevg 📚19-7-0TxSrO\" title=\"Greererpeton burkemorani, skull, large #971\" highlightstring=\"\"\u003eGreererpeton burkemorani, skull, large cast replica.\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eGreererpeton is an extinct genus of temnospondyl amphibian from the Mauch Chunk Formation, Mississippian age. In life it was about 1.50 m (5 ft) long. Several complete skeletons were discovered in the late 1960's at a limestone quarry at Greer, West Virginia. It was described as a new genus and new species. Greererpeton was a highly elongated creature adapted for swimming. Its body had 40 vertebrae, twice as much as average, and a flattened skull of about 18 cm (7 in) long. The limbs were short and mainly used to steer the creature as it was propelled by its long tail. Some marks on the side of the skull indicate that Greererpeton had a lateral line, a sensory organ commonly found in fish. This showed that it was still a primitive amphibian. Its ears were poorly developed.\u003c\/span\u003e\u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":43687812956351,"sku":"","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/files\/s280281755661769394-p85_i1_w300.jpg?v=1726689143"},{"product_id":"dimetrodon-skeleton-juvenile-cast-replica","title":"Dimetrodon Skeleton, juvenile cast replica","description":"\u003cp\u003e\u003cb\u003eDimetrodon, pronounced (die-MET-roh-don) which means (\"two measures of teeth\" so named because it had a large skull with two different types of teeth; shearing teeth and sharp canine teeth, unlike reptiles. Dentition showing this differentiation of teeth is called heterodonty).\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eJuvenile Dimetrodon Skeleton, Permian Of North America\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDimetrodon (meaning two-measure teeth) was a sail-backed, meat-eating animal that lived during the Permian Period, roughly 280 MYA years ago, before the dinosaurs evolved. It was a so-called mammal-like reptile, a pelycosaur; pelycosaurs were the ancestors of the mammals. Dimetrodon was a dominant carnivore during the Permian period, living mainly in swampy areas. Unlike their fellow non-finned pelycosaurs, they warmed up early after sunrise, and cooled off more efficiently during the heat of the day. This efficient thermoregulation along with their large and powerful jaws gave them the advantage over their cohorts, making them dominant. Dimetrodon was about 11.5 feet (3.5 m long and weighed roughly 550 pounds (250 kg. It had a large sail-like flap of skin along its back, dense with blood vessels. The sail was supported by long, bony spines, each of which grew out of a separate spinal vertebra (a bone in the back. The sail may have been a thermoregulatory structure, used to absorb and release heat. The sail may have also been used for mating and dominance rituals, and\/or for making Dimetrodon look much larger than it was to predators. This direct cast replica was found in Texas.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDimensions: 23x12 inches\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMaterial: resin\u003c\/p\u003e\n\u003cp\u003eProduction time approximately 1 month\u003c\/p\u003e\n\u003cp\u003ePlease call (314) 556-0650 or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"mailto:taylormadefossils@yahoo.com\"\u003eemail us\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor more photos or information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BigfootCasts.com","offers":[{"title":"Default Title","offer_id":44353515716799,"sku":null,"price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0041\/6635\/2996\/files\/RLHA3ATXQZ7K74MH4NBTDYLE.jpg?v=1751152807"}],"url":"https:\/\/bigfootcasts.com\/ja\/collections\/mammal-like-reptiles-synapsids-pelycosauria.oembed","provider":"BigfootCasts.com ","version":"1.0","type":"link"}