Tritylodontidae

Oligokyphus ("few cusps") is an extinct genus of herbivorous tritylodontid cynodont known from the Late Triassic to Early Jurassic of Europe, Asia and North America.

Tritylodontidae ("three-knob teeth", named after the shape of their cheek teeth) is an extinct family of small to medium-sized, highly specialized mammal-like cynodonts, with several mammalian traits including erect limbs, endothermy, and some details of the skeleton. They were the last-known family of the non-mammaliaform synapsids, persisting into the Early Cretaceous.

Bienotherium is an extinct genus of cynodonts from the Early Jurassic of China discovered by Bian Meinian (Mei Nien Bien). Despite its size, it is closely related to Lufengia, and is the largest tritylodont from the Lufeng Formation in China.

Kayentatherium is an extinct genus of tritylodontid cynodonts that lived during the Early Jurassic. It is one of two tritylodonts from the Kayenta Formation of northern Arizona, United States.

Tritylodon (from the Greek for "three-cusped tooth") is an extinct genus of tritylodonts, one of the most advanced group of cynodont therapsids. They lived in the Early Jurassic and possibly Late Triassic periods along with dinosaurs. They also shared many characteristics with mammals, and were once considered mammals because of overall skeleton construction. That was changed due to them retaining the vestigial amniote jawbones and a different skull structure. Tritylodonts are now regarded as non-mammalian synapsids.

Bocatherium is an extinct genus of tritylodont mammaliamorphs from the Pliensbachian (Early Jurassic) of Tamaulipas, Mexico. It is known only from a skull found at the Huizachal Canyon locality, "a Pliensbachian floodplain siltstone in the La Boca Formation".

Yunnanodon ("Yunnan tooth", from China's Yunnan province where it was discovered, and the Greek odon (ὀδών) meaning "tooth") is an extinct genus of tritylodontid mammaliamorphs that lived in China during the Sinemurian stage of the Early Jurassic period. Its specific name brevirostre is Latin for "short-beaked" (brevis ("short") + rostrum ("beak")).

Bienotheroides is an extinct genus of tritylodontid mammaliamorphs from the Jurassic of China and Mongolia. The genus contains six species, primarily known from cranial remains.

Dinnebitodon is an extinct genus of tritylodontid mammaliamorphs from the Early Jurassic. It has only been found in the Kayenta Formation in northeastern Arizona. It closely resembles the related genus Kayentatherium from the same formation. It is set apart by differences in the dentition, while resembling in most other respects.

Fossiomanus is an extinct genus of tritylodontid mammaliamorphs from the Early Cretaceous of China. It includes one species, F. sinensis, which is known from a single nearly complete skeleton from the Aptian Jiufotang Formation. Features of its limbs and vertebrae indicate that Fossiomanus was adapted towards a fossorial lifestyle.

Stereognathus is an extinct genus of tritylodontid cynodonts from the Middle Jurassic of the United Kingdom. There is a single named species: S. ooliticus, named after the Great Oolite deposits of England. A second species, S. hebridicus, was named after the Hebrides in Scotland, where it was found; it was synonymized with S. ooliticus in 2017.