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Tropidemys

Reptilia - Testudines - Plesiochelyidae

Synonyms
Synonymy list
YearName and author
1862Chelonia valanginiensis Pictet and Campiche
1873Tropidemys Rütimeyer p. 40
1878Chelonides robusta Portis
1878Tropidemys Portis p. 18
1889Tropidemys Lydekker pp. 155-156
1958Tropidemys Delair p. 55
1965Tropidemys Bräm p. 174
1988Tropidemys Carroll
1996Tropidemys Lapparent de Broin et al. p. 557
2014Tropidemys Anquetin et al.
2014Tropidemys Puntener et al.
2015Tropidemys Pérez-García
2017Tropidemys 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
Thalassochelydia
familyPlesiochelyidaeRütimeyer 1873
genusTropidemys

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. 2017Tropidemys can be diagnosed as a “plesiochelyid” by the full list of shell characters provided for that taxon above. Tropidemys is currently differentiated from all other “ple- siochelyids” by particularly thick shell bones, a posteriorly tec- tiform carapace, a greatly reduced or absent nuchal notch, keeled neurals (more pronounced posteriorly), wide and hexagonal intermediate and posterior neurals with anterolateral sides as long as posterolateral sides, retention of costo-peripheral fontanelles in juveniles (closed in adults), and narrow vertebral scutes.