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Echmatemys callopyge

Reptilia - Testudines - Geoemydidae

Taxonomy
Echmatemys callopyge was named by Hay (1908). Its type specimen is AMNH No. 2087, a shell, and it is a 3D body fossil. Its type locality is White River (Uinta B), which is in an Uintan terrestrial horizon in the Uinta Formation of Utah.

It was recombined as Echmatemys septaria callopyge by Roberts (1962).

Synonymy list
YearName and author
1908Echmatemys callopyge Hay
1915Echmatemys callopyge Gilmore p. 123
1962Echmatemys septaria callopyge Roberts p. 386
2018Echmatemys callopyge Vlachos
2020Echmatemys callopyge Vlachos p. 18

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
RankNameAuthor
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderCryptodira
Pantestudinoidea
superfamilyTestudinoidea
Pangeoemydidae
familyGeoemydidaeTheobald 1868
genusEchmatemys
speciescallopyge

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
E. Vlachos 2018Echmatemys callopyge can be diagnosed as a member of Echmatemys based on the characters mentioned for that clade above. Echmatemys callopyge differs from other Echmatemys by the following combination of characters: no contact between vertebral I and marginal II, pleural I laterally covering the nuchal, entoplastron covered by both gulars and pectorals, femorals medially much shorter than anal scutes, anterior and posterior lobes well-rounded, and a narrow and rounded anal notch.