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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
T. pliopedemontanus

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()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderCryptodira
familyTrionychidaeGray 1825
subfamilyTrionychinaeGray 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.

†Trionyx kansaiensis Vitek and Danilov 2010
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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.
Measurements
No measurements are available
Composition: phosphaticsubp
Body part: carapacef
Adult length: 100 to < 1000f
Grouping: solitaryf
Environment: brackish, freshwaterf
Locomotion: actively mobilef
Life habit: aquaticf
Diet: piscivoref
Diet 2: carnivoref
Reproduction: oviparousf
Created: 2005-08-25 13:24:04
Modified: 2005-09-09 19:45:41
Source: f = family, subp = subphylum
References: Ernst and Barbour 1989, Carroll 1988

Age range: base of the Middle Turonian to the top of the Santonian or 93.50000 to 83.60000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Middle Turonian - Late/Upper Turonian93.5 - 89.3Uzbekistan (Navoi) Trionyx kansaiensis (75943)
Santonian86.3 - 83.6Kazakhstan (Ongtustik Qazaqstan) Trionyx kansaiensis, Paraplastomenus sp. (58719)
Santonian - Early/Lower Campanian86.3 - 70.6Kazakhstan (Qyzylorda) Trionyx kansaiensis (53134 68826)
Early/Lower Santonian85.8 - 83.5Tajikistan (Sogd) Trionyx kansaiensis (type locality: 58701)