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Pachygenys
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| Pachygenys Temporal range: Early Cretaceous,
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| Holotype of P. adachii | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Infraorder: | Scincomorpha |
| Genus: | †Pachygenys Gao and Cheng, 1999 |
| Type species | |
| Pachygenys thlastesa Gao and Cheng, 1999[2]
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| Other species | |
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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
[edit]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.[1]
References
[edit]- ^ a b Ikeda, Tadahiro; Oti, Hidetoshi (2014). "A new fossil lizard from the Lower Cretaceous Sasayama Group of Hyogo prefecture, western Honshu, Japan". Journal of Vertebrate Paleontology. 35 e885032. doi:10.1080/02724634.2014.885032. S2CID 84568156.
- ^ Keqin, Gao; Zhengwu, Cheng (14 September 1999). "A new lizard from the Lower Cretaceous of Shandong, China". Journal of Vertebrate Paleontology. 19 (3): 456–465. doi:10.1080/02724634.1999.10011158.
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