Neotrirachodon

Neotrirachodon is an extinct genus of therapsids which existed in Russia during the Middle Triassic period. Its type and only species is Neotrirachodon expectatus.^[3]

Neotrirachodon Temporal range: Anisian ~247–242 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	†Therocephalia
Superfamily:	†Baurioidea
Family:	†Bauriidae (?)
Genus:	†Neotrirachodon Tatarinov, 2002
Species:	†N. expectatus
Binomial name
†Neotrirachodon expectatus Tatarinov, 2002[1]
Synonyms[2]
Antecosuchus ochevi Tatarinov, 1973 (in part)

It is known from a jaw fossil consisting of the left dentary with postcanines. It was recovered from the Donguz Formation, Orenburg Oblast of Russia.^[4][5] The fossil was first described as belonging to the genus Antecosuchus (as Antecosuchus ochevi),^[4] but in 2002 it was placed in its own monotypic genus.^[3]

It has tentatively been classified as a trirachodontid gomphodont pending further fossil discoveries. Gomphodonts were a group of herbivorous cynodonts which lived during the Triassic.^[6] If correct, it would be the first trirachodontid described from Russia.^[4]

Its classification remains uncertain, however. Other studies treat it as an incertae sedis gomphodont, while others propose that it is more likely to be a bauriid therocephalian rather than a trirachodontid.^[7][8]