Pachygenys Temporal range: Early Cretaceous, Aptian–Albian PreꞒ Ꞓ O S D C P T J K Pg N
Holotype of P. adachii
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Infraorder:	Scincomorpha
Genus:	†Pachygenys Gao and Cheng, 1999
Type species
Pachygenys thlastesa Gao and Cheng, 1999[1]
Other species
†P. adachii Ikeda, Ota and Saegusa, 2014[2]

Pachygenys ("thick jaw") is a genus of scincomorphan lizard from the Lower Cretaceous of Asia, P. thlastesa from the Doushan Formation, China, and P. adachii from the Ohyamashimo Formation, Japan. Its name is composed of the Greek words παχυς pachys ("thick") and γένυς génys ("jaw").

Description

Pachygenys has a few defining characters, of which include a distinct foreshortening of the dentary tooth row and a reduced amount of dentary teeth. P. adachii differs from P. thlastesa in a few aspects; P. adachii has a shorter tooth row than P. thlastesa, as well as anterior and middle teeth that have uncuspid crowns and posterior teeth with simple, uncuspid conical crowns.^[2]

References

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