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Tianchisaurus nedegoapeferima

Reptilia -

Taxonomy
Tianchiasaurus nedegoapeferima was named by Dong (1993). Its type specimen is IVPP V.10614, a partial skeleton, and it is a 3D body fossil. Its type locality is Tianchi, Sagonghe Valley, which is in a Jurassic fluvial-lacustrine sandstone in the Toutunhe Formation of China. It is the type species of Tianchiasaurus, Tianchisaurus.

It was recombined as Tianchisaurus nedegoapeferima by Dong (1994); it was considered a nomen dubium by Carpenter (2001) and Vickaryous et al. (2004); it was considered a nomen dubium by Delsate et al. (2018).

Synonymy list
YearName and author
1993Tianchiasaurus nedegoapeferima Dong p. 259 figs. 2-5; Pl. 1-4
1994Tianchisaurus nedegoapeferima Dong p. 142
2000Tianchiasaurus nedegoapeferima Tumanova p. 530
2001Tianchiasaurus nedegoapeferima Dong p. 97
2007Tianchiasaurus nedegoapeferima Norman et al. p. 867
2014Tianchisaurus nedegoapefererima Han et al. p. 1

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
RankNameAuthor
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Genasauria
Thyreophora()
Ankylosauria()
genusTianchisaurus
speciesnedegoapeferima()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
Z. Dong 1993A primitive, small (up to 3 meters long) anklyosaur with well developed armour in the shoulder region and many small scutes in the thorax. Skull relatively heavy, and a little wider than that of Scelidosaurus. Mandible thinner than in other known ankylosaurs, but similar to those of stegosaurs. Intercentrum and arch of atlas not co-ossified with ribs. Dorsal vertebrae amphiplatyan, and primitive for an ankylosaur. Dorsal centra and ribs not co-ossified. Sacrum consists of seven vertebrae, including to clear dorsosacrals and one caudosacral. Small, flat tail club. Fourth trochanter of femur long and prominent. Metatarsals (I–IV) rather primitive for an ankylosaur.