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Trionyx kansaiensis

Reptilia - Testudines - Trionychidae

Taxonomy
Trionyx kansaiensis was named by Vitek and Danilov (2010). Its type specimen is ZIN PH 630/64, a partial shell (A partial nuchal), and it is a 3D body fossil. Its type locality is Kansai, FKA-7a, which is in a Santonian fluvial-deltaic horizon in the Yalovach Formation of Tajikistan.

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
2010Trionyx kansaiensis Vitek and Danilov p. 387
2012Trionyx kansaiensis Vitek and Danilov p. 52
2013Trionyx kansaiensis Danilov and Vitek
2017Trionyx kansaiensis Georgalis and Joyce

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
RankNameAuthor
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
familyTrionychidaeGray 1825
Trionychinae(Gray 1825)
genusTrionyx
specieskansaiensis

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
N. S. Vitek and I. G. Danilov 2010A trionychine, which can be differentiated from all other Cretaceous trionychines with known shells by bigger size, strong nuchal emargination, eight neurals (except “Aspideretes” maortuensis and “Trionyx” kyrgyzensis), unreduced costals 8 (except “Trionyx” kyrgyzensis), lateral lobe of hyoplastron longer than its medial lobe (except “Trionyx” kyrgyzensis), and, probably, absence of the separate anteromedial process of the hypoplastron (except “Aspideretes” maortuensis and “Trionyx” kyrgyzensis); besides that, can be differentiated from species of Aspideretoides by absence of preneural and by sculpturing pattern, and from “Trionyx” kyrgyzensis by presence of sculpturing on plastron.