Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Cladus: Theriimorpha
Cladus: Theriiformes
Cladus: Trechnotheria
Cladus: Zatheria
Subclassis: Theria
Cladus: Eutheria
Infraclassis: Placentalia
Magnordo: Boreoeutheria
Superordo: Laurasiatheria
Cladus: †Meridiungulata
Ordo: †Notoungulata
Genus: Isotemnidae
Genus: Thomashuxleya
Species: †T. rostrata – †T. externa
Name
Thomashuxleya Ameghino 1901
References
Primary referencesAmeghino, F. (1901). Notices preliminaries sur des ongulés nouveaux des terrains crétacés de Patagonie. Academia Nacional de Ciencias en Córdoba. Boletín Nº16, 349-426.
Thomashuxleya is an extinct genus of notoungulate mammal, named after famous 19th-century biologist Thomas Huxley.
Description
Thomashuxleya was about 1.3 metres (4.3 ft) in length and weighted an estimated 113 kilograms (249 lb), with a heavy body and strong limbs.[1] Its large skull had 44 teeth in its jaws, including large canines which may have been used to dig around in earth. It had four toes on each foot, and probably walked somewhat like a modern peccary. It was a relatively generalised animal, not specialised for any particular way of life.[2] There's an almost complete skeleton of this animal in exhibition in the American Museum of Natural History. This skeleton was discovered during the Scarrit expedition to Patagonia, Argentina, that was led by the paleontologist George Gaylord Simpson. Fossils of Thomashuxleya have been found in the Sarmiento and Casamayor Formations of Argentina.[3]
References
D. Patterson, Bruce (€2012) Bones, Clones, and Biomes: The History and Geography of Recent Neotropical Mammals p.83
Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 251. ISBN 1-84028-152-9.
Thomashuxleya at Fossilworks.org
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