Xenocretosuchus is an extinct genus of tritylodont therapsids from the Aptian (Early Cretaceous) Ilek Formation of Siberia, in the Russian Federation.[1] The type species, X. sibiricus, is known only from dental elements,[2] as is X. kolossovi, described from the Batylykh Formation in 2008.[3] Some authors have treated these species as part of the genus Stereognathus, otherwise known from the Middle Jurassic of Britain,[4] but this is rejected by other authors.[5]
| Xenocretosuchus Temporal range: Aptian,
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Clade: | Therapsida |
| Clade: | Cynodontia |
| Family: | †Tritylodontidae |
| Genus: | †Xenocretosuchus Tatarinov & Matchenko, 1999 |
| Type species | |
| Xenocretosuchus sibiricus Tatarinov & Matchenko, 1999
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| Other species | |
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Alongside Montirictus and Fossiomanus, it is amongst the latest known non-mammaliform synapsids, extending their range to the Early Cretaceous.
References
edit- ^ Fossilworks. "Xenocretosuchus." Retrieved from
- ^ Palaeos. "Cynodontia: Tritylodontidae." Retrieved from
- ^ Lopatin & Agadjanian, 2008. "A Tritylodont (Tritylodontidae, Synapsida) from the Mesozoic of Yakutia." Retrieved from [1]
- ^ Averianov, A.O.; Martin, T.; Lopatin, A.V.; Schultz, J.A.; Skutschas, P.P.; Rico, S.; Krasnolutskii, S.A. (2017). "A tritylodontid synapsid from the Middle Jurassic of Siberia and the taxonomy of derived tritylodontids". Journal of Vertebrate Paleontology. 37 (5): e1363767. doi:10.1080/02724634.2017.1363767. S2CID 90249441.
- ^ Liu, Lu; Zhou, Chang-Fu; Wang, Jia-Shu; Xue, Jin-Zhuang (2022-07-06). "A new tritylodontid from the Middle Jurassic Shaximiao Formation of western Hubei, China". Historical Biology: 1–10. doi:10.1080/08912963.2022.2094262. ISSN 0891-2963.
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