Xenocretosuchus

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Xenocretosuchus
Temporal range: Aptian, 136.4–125.45 Ma
PreꞒ
O
S
D
C
P
T
J
K
Pg
N
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Clade: Cynodontia
Family: Tritylodontidae
Genus: Xenocretosuchus
Tatarinov & Matchenko, 1999
Type species
Xenocretosuchus sibiricus
Tatarinov & Matchenko, 1999
Other species
  • X. kolossovi Lopatin & Agadjanian, 2008

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] Both species may be part of the genus Stereognathus.[4]

Alongside Montirictus,[5] it is the latest known non-mammalian synapsid, extending their range to the Early Cretaceous.

References[]

  1. ^ Fossilworks. "Xenocretosuchus." Retrieved from
  2. ^ Palaeos. "Cynodontia: Tritylodontidae." Retrieved from
  3. ^ Lopatin & Agadjanian, 2008. "A Tritylodont (Tritylodontidae, Synapsida) from the Mesozoic of Yakutia." Retrieved from [1]
  4. ^ 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.
  5. ^ Hiroshige Matsuoka, Nao Kusuhashi and Ian J. Corfe (2016). "A new Early Cretaceous tritylodontid (Synapsida, Cynodontia, Mammaliamorpha) from the Kuwajima Formation (Tetori Group) of central Japan". Journal of Vertebrate Paleontology. Online edition: e1112289. doi:10.1080/02724634.2016.1112289.


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