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Thalassemys

Reptilia - Testudines - Thalassemydidae

Synonyms
Synonymy list
YearName and author
1859Thalassemys Rütimeyer
1873Thalassemys Rütimeyer p. 27
1889Thalassemys Lydekker p. 148
1965Thalassemys Bräm p. 142
1984Parathalassemys Nessov and Krassevskaya
1988Thalassemys Carroll
1996Thalassemys Lapparent de Broin et al. p. 557
2000Parathalassemys Sukhanov p. 326
2003Parathalassemys Parham and Hutchison p. 784
2004Thalassemys Milner p. 1460
2007Thalassemys Joyce
2008Thalassemys Danilov and Parham
2008Thalassemys Pérez-García et al.
2009Thalassemys Anquetin et al.
2009Thalassemys Mateus et al.
2012Thalassemys Karl et al.
2013Thalassemys Pérez-García and Murelaga
2014Thalassemys Anquetin et al.
2014Thalassemys Perea et al.
2014Thalassemys Puntener et al.
2015Thalassemys Puntener et al.
2015Thalassemys Pérez-García
2017Thalassemys Anquetin et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
RankNameAuthor
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
PancryptodiraJoyce et al. 2004
familyThalassemydidaeZittel 1889
genusThalassemysRütimeyer 1859

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
J. Anquetin et al. 2017Thalassemys can tentatively be diagnosed as a repre- sentative of Thalassochelydia, but the presence of three cervicals is suspected in some individuals. Thalassemys is currently differ- entiated from other thalassochelydians by a large size (carapace length greater than 600 mm), absence of nuchal notch, clearly visible linear striations perpendicular to most shell sutures, retention of reduced costo-peripheral fontanelles in adults, an osseous bridge in adults, vertebral scutes with anterolaterally concave and posterolaterally convex margins, lateral plastral fontanelles, a tendency toward the reduction of sutural contacts between hyoplastra and anterior plastral elements, and a wide scapular angle (usually more than 110°).