INFO |
Szechuanosaurus
(Young,1942)
> S.campi
(Young,1942)>>
S.
yandonensis (Dong,Chang,Li &
Zhou,
1978)
Szechuanosaurus > S.
zigongensis (Gao,1993)
and partim (Chienkosaurus ceratosauroides Young,1942
)
Holotype- (IVPP V237) premaxillary tooth (37 mm) included
with Szechuanosaurus
campi. The remaining 3 teeth (C.
ceratosauroides (1)) are probably crocodylian.
Some researchers do not think its possible to refer the
theropod tooth included in the Chienkosaurus holotype to
Szechuanosaurus. The Chienkosaurus tooth is never compared of
Szechuanosaurus, Yangchuanosaurus shangyouensis or Sinraptor
hepingensis the teeth associated with Dong's 1983 skeleton are
possible shed from scavengers. The species are roughly similar in
morphology (recurved, flattened, both edges serrated), both Y.
shangyouensis and S. hepingensis have 24 denticles per cm, while S.
campi has 29 per cm. These are very similar, especially considering
interdental variation, and further study must be done before they
refer isolated teeth to either
species. |