{"product_id":"ischigualastia-jenseni","title":"Ischigualastia jenseni","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a5dbd41-4b78-83eb-bdb1-9c8884dec0d4-27\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a5dbd41-4b78-83eb-bdb1-9c8884dec0d4-27\" data-turn-id-container=\"request-6a5dbd41-4b78-83eb-bdb1-9c8884dec0d4-27\" data-testid=\"conversation-turn-342\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"6bb68710-b373-473c-ae1c-1ba16c7391dc\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-6-thinking\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"692\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cem\u003e\u003cstrong data-start=\"0\" data-end=\"26\"\u003eIschigualastia jenseni\u003c\/strong\u003e \u003c\/em\u003ewas a large kannemeyeriiform dicynodont from the Late Triassic of South America, known from fossil remains recovered from the Ischigualasto Formation in San Juan Province, Argentina. Originally described by Cox in 1962, this taxon represents one of the most characteristic large non-dinosaurian herbivores of Carnian continental ecosystems and one of the most imposing dicynodonts in the South American fossil record. Its generic name refers directly to Ischigualasto, the geological unit in which it was discovered, while the specific epithet \u003cem data-start=\"571\" data-end=\"580\"\u003ejenseni\u003c\/em\u003e honours James A. Jensen, who was associated with the history of the discovery and study of the fossil material.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"694\" data-end=\"1489\"\u003eGeologically, \u003cem data-start=\"708\" data-end=\"732\"\u003eIschigualastia jenseni\u003c\/em\u003e comes from continental deposits of the Ischigualasto Formation, a famous Late Triassic unit that preserves one of the most important terrestrial faunas from the beginning of the Age of Dinosaurs. The formation records floodplains, river channels, developed soils and strongly seasonal landscapes, where archosaurs, rhynchosaurs, cynodonts, dicynodonts and some of the earliest known dinosaurs coexisted. The presence of \u003cem data-start=\"1153\" data-end=\"1169\"\u003eIschigualastia\u003c\/em\u003e in this fauna demonstrates that large synapsid herbivores still played a major ecological role during the Carnian, sharing these ecosystems with lineages that would later dominate the Mesozoic. The Smithsonian classifies \u003cem data-start=\"1391\" data-end=\"1415\"\u003eIschigualastia jenseni\u003c\/em\u003e as a Late Triassic Carnian dicynodont within Therapsida and Dicynodontia.\u003c\/p\u003e\n\u003cp data-start=\"1491\" data-end=\"2101\"\u003e\u003cem data-start=\"1491\" data-end=\"1507\"\u003eIschigualastia\u003c\/em\u003e belonged to Dicynodontia, a group of herbivorous anomodont therapsids characterised by robust skulls, a keratinous beak, reduced dentition and, in many forms, large upper tusks. Unlike the archosaurian reptiles with which it shared its environment, \u003cem data-start=\"1757\" data-end=\"1773\"\u003eIschigualastia\u003c\/em\u003e formed part of the synapsid lineage and was therefore more closely related evolutionarily to mammals than to dinosaurs or crocodilians. Its anatomy reflects the late persistence of large dicynodonts in Triassic ecosystems, where they continued to occupy terrestrial megaherbivore niches before the group ultimately disappeared.\u003c\/p\u003e\n\u003cp data-start=\"2103\" data-end=\"2793\"\u003eFrom a morphometric perspective, \u003cem data-start=\"2136\" data-end=\"2160\"\u003eIschigualastia jenseni\u003c\/em\u003e was a very large animal, broadly comparable in scale to other giant kannemeyeriiform dicynodonts. A conservative reconstruction places it at approximately 3–3.5 metres in body length, with an estimated shoulder height of around 1–1.3 metres and a body mass of several hundred kilograms. The largest individuals may have approached or exceeded one tonne. These figures should be regarded as estimates, since the known material consists mainly of skulls and partial skeletal elements. Nevertheless, the robustness of the skull, girdles and torso indicates that it was one of the most massive herbivores of the Ischigualasto Formation.\u003c\/p\u003e\n\u003cp data-start=\"2795\" data-end=\"3390\"\u003eThe skull of \u003cem data-start=\"2808\" data-end=\"2832\"\u003eIschigualastia jenseni\u003c\/em\u003e was large, tall and massive, with a rostral region adapted to support a powerful keratinous beak. Like other dicynodonts, it would have used this beak to crop or pull vegetation, while strong jaw musculature and oral surfaces helped process tough plant matter. Compared with more gracile forms, \u003cem data-start=\"3128\" data-end=\"3144\"\u003eIschigualastia\u003c\/em\u003e gives an overall impression of exceptional cranial and bodily solidity, consistent with a large generalist herbivore inhabiting Triassic landscapes dominated by ferns, early conifers, horsetails, seed ferns and other early Mesozoic plant groups.\u003c\/p\u003e\n\u003cp data-start=\"3392\" data-end=\"3928\"\u003eIts body was probably broad, low and heavy, supported by robust limbs with a semi-erect or partly sprawling posture depending on the region of the limb. It had a voluminous torso and a relatively short tail. This anatomy was not suited to fast running, but rather to stable movement across floodplains and open environments. In life, \u003cem data-start=\"3726\" data-end=\"3742\"\u003eIschigualastia\u003c\/em\u003e probably occupied a role comparable to that of a large non-dinosaurian megaherbivore, consuming substantial quantities of vegetation and forming an essential part of Triassic food webs.\u003c\/p\u003e\n\u003cp data-start=\"3930\" data-end=\"4722\"\u003eThe Ischigualasto fauna included predators such as \u003cem data-start=\"3981\" data-end=\"4002\"\u003eSaurosuchus galilei\u003c\/em\u003e, rhynchosaurs such as \u003cem data-start=\"4025\" data-end=\"4053\"\u003eHyperodapedon sanjuanensis\u003c\/em\u003e, cynodonts such as \u003cem data-start=\"4073\" data-end=\"4086\"\u003eExaeretodon\u003c\/em\u003e, various archosaurs and early dinosaurs including \u003cem data-start=\"4137\" data-end=\"4152\"\u003eHerrerasaurus\u003c\/em\u003e and \u003cem data-start=\"4157\" data-end=\"4167\"\u003eEoraptor\u003c\/em\u003e. Within this ecosystem, \u003cem data-start=\"4192\" data-end=\"4216\"\u003eIschigualastia jenseni\u003c\/em\u003e would have represented a potential prey animal of considerable size for large terrestrial carnivores, while also being protected by its bulk, strength and robust build. Its presence demonstrates that the earliest dinosaurs did not evolve in empty ecosystems, but within complex communities still dominated by many non-dinosaurian lineages. The Ischigualasto Formation preserves dicynodonts, rhynchosaurs, archosauriforms, dinosaurs and cynodonts, reflecting the remarkable diversity of Triassic tetrapods.\u003c\/p\u003e\n\u003cp data-start=\"4724\" data-end=\"4773\"\u003e\u003cstrong data-start=\"4724\" data-end=\"4773\"\u003eApproximate Ischigualastia Replica Dimensions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"4775\" data-end=\"4885\"\u003e\u003cstrong data-start=\"4775\" data-end=\"4806\"\u003e1:35 Scale — Complete Model\u003c\/strong\u003e\u003cbr data-start=\"4806\" data-end=\"4809\"\u003eLength: 81 mm\u003cbr data-start=\"4822\" data-end=\"4825\"\u003eHeight: 43 mm\u003cbr data-start=\"4838\" data-end=\"4841\"\u003eWidth: 32 mm\u003cbr data-start=\"4853\" data-end=\"4856\"\u003eSnout-to-tail length: 86 mm\u003c\/p\u003e\n\u003cp data-start=\"4887\" data-end=\"4997\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"4887\" data-end=\"4918\"\u003e1:20 Scale — Complete Model\u003c\/strong\u003e\u003cbr data-start=\"4918\" data-end=\"4921\"\u003eLength: 142 mm\u003cbr data-start=\"4935\" data-end=\"4938\"\u003eHeight: 75 mm\u003cbr data-start=\"4951\" data-end=\"4954\"\u003eWidth: 55 mm\u003cbr data-start=\"4966\" data-end=\"4969\"\u003eSnout-to-tail length: 150 mm\u003c\/p\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\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Miniature Museum","offers":[{"title":"1:35 \/ Sin imprimar","offer_id":62017996161292,"sku":"DC-1520-135-SINI","price":37.8,"currency_code":"EUR","in_stock":true},{"title":"1:35 \/ Imprimado","offer_id":62017996194060,"sku":"DC-1520-135-IMPRI","price":42.8,"currency_code":"EUR","in_stock":true},{"title":"1:35 \/ Pintado a mano","offer_id":62017996226828,"sku":"DC-1520-135-PINTA","price":122.9,"currency_code":"EUR","in_stock":true},{"title":"1:20 \/ Sin imprimar","offer_id":62017996259596,"sku":"DC-1520-157-SINI","price":58.9,"currency_code":"EUR","in_stock":true},{"title":"1:20 \/ Imprimado","offer_id":62017996292364,"sku":"DC-1520-157-IMPRI","price":65.9,"currency_code":"EUR","in_stock":true},{"title":"1:20 \/ Pintado a mano","offer_id":62017996325132,"sku":"DC-1520-157-PINTA","price":189.3,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/1106\/7660\/files\/Ischigualastiajenseni_3.png?v=1785862205","url":"https:\/\/dinosauriacreatures.com\/en\/products\/ischigualastia-jenseni","provider":"Dinosauria Creatures","version":"1.0","type":"link"}