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Echmatemys naomi

Reptilia - Testudines - Geoemydidae

Taxonomy
Echmatemys naomi was named by Hay (1908). Its type specimen is AMNH 5975 (holotype), a partial shell (partial carapace), and it is a 3D body fossil. Its type locality is Little Dry Creek, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.

Synonyms
Synonymy list
YearName and author
1908Echmatemys naomi Hay
1915Echmatemys obscura Gilmore p. 135
2018Echmatemys naomi Vlachos

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
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
speciesnaomi

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 naomi can be diagnosed as a member of Echmatemys based on the characters listed for that clade above. Echmatemys naomi differs from other Echmatemys based on the following combination of characters: contact between marginal II and vertebral I, neural I much longer than wide, vertebral IV/V sulcus placed on the last neural, clear contact of large axillary scute with marginal IV and V, wide suprapygal V, and large inguinal scute that does not contact the femoral scute in ventral view.