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Yikezhaogia

From Wikipedia, the free encyclopedia
Genus of therapsids from the Early Triassic of China

Yikezhaogia
Temporal range:Early Triassic
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Clade:Synapsida
Clade:Therapsida
Clade:Therocephalia
Superfamily:Baurioidea
Genus:Yikezhaogia
Li, 1984
Type species
Yikezhaogia megafenestrala
Li, 1984

Yikezhaogia is an extinctgenus oftherocephaliantherapsids from theEarly Triassic ofInner Mongolia (China).[1][2] It is known from a single fragmentary skull and associated postcranial bones representing the speciesYikezhaogia megafenestrala. It is identifiable as a therocephalian by its thin postorbital bar behind the eye socket, its elongated temporal opening behind the bar, and a thin lower jaw with a lowcoronoid process. Large tooth sockets in the upper jaw indicate thatYikezhaogia had largecaniniform teeth. The teeth of the lower jaw are blunt-tipped and cylindrical.[3] Although its exact position among therocephalians is uncertain,Yikezhaogia is probably abasal member of the groupBaurioidea.[2]

References

[edit]
  1. ^Li, Yuhe (1984)."On a New Scaloposaurid from Inner Mongolia"(PDF).Vertebrata PalAsiatica.22 (1):21–28.
  2. ^abAbdala, F.; Rubidge, B. S.; Van Den Heever, J. (2008)."The Oldest Therocephalians (Therapsida, Eutheriodontia) and the Early Diversification of Therapsida".Palaeontology.51 (4): 1011.doi:10.1111/j.1475-4983.2008.00784.x.
  3. ^Sun, A. (1991)."A review of Chinese therocephalian reptiles"(PDF).Vertebrata PalAsiatica.29 (2):85–94.
Synapsida
Therocephalia
    • see below↓
Lycosuchidae
Scylacosauridae
Chthonosauridae
Akidnognathidae
Whaitsioidea
Hofmeyriidae
Whaitsiidae
Baurioidea
    • see below↓
Scylacosaurus sclateri

Moschorhinus kitchingi

Viatkosuchus sumini
Karenitidae
Lycideopidae
Regisauridae
Bauriamorpha
Ericiolacertidae
Bauriidae
Regisaurus jacobiMicrogomphodon oligocynus
Yikezhaogia


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