Extinct genus of cynodonts of Early Triassic South Africa
Thrinaxodon
Temporal range: Early Triassic, 251–247 Ma
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Fossil of T. liorhinus in National Museum of Natural History
Diagram of skull in lateral view
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Synapsida
Clade:
Therapsida
Clade:
Cynodontia
Clade:
Epicynodontia
Family:
†Thrinaxodontidae Watson & Romer, 1956
Genus:
†Thrinaxodon Seeley, 1894
Type species
Thrinaxodon liorhinus
Seeley, 1894
Thrinaxodon is an extinct genus of cynodonts, including the species T. liorhinus which lived in what are now South Africa and Antarctica during the Early Triassic. Thrinaxodon lived just after the Permian–Triassic mass extinction event, its survival during the extinction may have been due to its burrowing habits.[1]
Similar to other therapsids, Thrinaxodon adopted a semi-sprawling posture, an intermediary form between the sprawling position of basal tetrapods (still observed in modern Crocodilia) and the more upright posture present in current mammals.[2]Thrinaxodon is prevalent in the fossil record in part because it was one of the few carnivores of its time, and was of a larger size than similar cynodont carnivores.[citation needed]
^Damiani, R.; Modesto, S.; Yates, A.; Neveling, J. (2003). "Earliest evidence of cynodont burrowing". Proceedings of the Royal Society of London B. 270 (1525): 1747–1751. doi:10.1098/rspb.2003.2427. JSTOR 3592240. PMC 1691433. PMID 12965004.
^Blob R. 2001. Evolution of hindlimb posture in non-mammalian therapsids: biomechanical tests of paleontological hypotheses. 27(1): 14-38.
Thrinaxodon is an extinct genus of cynodonts, including the species T. liorhinus which lived in what are now South Africa and Antarctica during the Early...
of Broomistega was discovered alongside the skeleton of the cynodont Thrinaxodon (a mammal relative) in a cast of a burrow. The individual probably entered...
Thrinaxodon Col (85°12′S 174°19′W / 85.200°S 174.317°W / -85.200; -174.317) is a rock col 2 nautical miles (3.7 km) southeast of Rougier Hill. The...
compared with Thrinaxodon, a more derived basal cynodont, because Thrinaxodon is the best known of all the Epicynodonts. Galesaurus and Thrinaxodon are also...
Prozostrodon brasiliensis was originally described as a species of Thrinaxodon in a 1987 paper by Mário C. Barberena, José F. Bonaparte and A. M. Sá...
1982 by Thomas Kemp, who defined it as all cynodonts more derived than Thrinaxodon. In 2001, Hopson and Kitching redefined the clade Eucynodontia as the...
12156. Estes, Richard (1961). "Cranial anatomy of the cynodont reptile Thrinaxodon liorhinus". Bulletin of the Museum of Comparative Zoology. 125: 165–180...
in the nonmammalian cynodont Thrinaxodon. Popular sources, nevertheless, continue to attribute whiskers to Thrinaxodon. Studies on Permian coprolites...
Platycraniellus has a variety of morphologies similar to the sister taxon of Thrinaxodon, a relatively well-studied taxon. Platycraniellus elegans was discovered...
The non-eucynodont cynodonts survived the Permian–Triassic extinction; Thrinaxodon, Galesaurus and Platycraniellus are known from the Early Triassic. By...
lineage which includes modern mammals and their ancestors, is a cynodont, Thrinaxodon liorhinus, found in the Karoo of South Africa, estimated to be 251 million...
http://www.ucmp.berkeley.edu/synapsids/pelycosaurs.html Berkeley University "Thrinaxodon, like any fossil, should be thought of as a cousin of our ancestor, not...
in the non-mammalian cynodont Thrinaxodon. Popular sources, nevertheless, continue to attribute whiskers to Thrinaxodon. A trace fossil from the Lower...
endothermy, with the earliest suggested instance of hibernation being in Thrinaxodon, an ancestor of mammals that lived roughly 252 million years ago. The...
abundant than other Early Triassic burrowers such as Procolophon or Thrinaxodon. The suggestion that Lystrosaurus was helped to survive and dominate...
(vertebrate) locality at which several specimens of the mammal-like reptile Thrinaxodon were found. 85°10′S 174°30′W / 85.167°S 174.500°W / -85.167; -174...
eutheriodonts, the beginnings of a palate are clearly visible. The later Thrinaxodon has a full and completely closed palate, forming a clear progression...
mammals like Morganucodon, but not in their cynodont ancestors like Thrinaxodon. The hairs of the fur in modern animals are all connected to nerves,...
respiratory turbinates have been found in advanced Triassic cynodonts, such as Thrinaxodon and Diademodon. This suggests that they may have had fairly high metabolic...
Evolution of mammals Paleoworld- Featured in the episode "Tail Of A Sail". Thrinaxodon Tritylodontids Jones & Bartlett Learning, Strickberger's Evolution, 2008...
Late Permian-Present, 260–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Skeleton of Thrinaxodon liorhinus, a basal epicynodont Sperm whale, a modern-day epicynodont...
put forward as the most likely explanation why this therapsid cynodont Thrinaxodon liorhinus shared its burrow with a temnospondyl amphibian, Broomistega...
more derived cynodonts. Progalesaurus, like Galesaurus, Cynosaurus, and Thrinaxodon, possesses a large zygomatic arch. Under this arch, in posterior view...
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