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Echmatemys cibollensis

Reptilia - Testudines - Geoemydidae

Taxonomy
Emys cibollensis was named by Cope (1877). Its type specimen is USNM 2578 (holotype), a partial shell (shell fragments), and it is a 3D body fossil. Its type locality is Gallinas River region, which is in a Wasatchian terrestrial horizon in New Mexico.

It was synonymized subjectively with Echmatemys lativertebralis by Lichtig and Lucas (2015); it was recombined as Echmatemys cibollensis by Hay (1906), Zonneveld et al. (2000) and Vlachos (2018).

Synonymy list
YearName and author
1877Emys cibollensis Cope
1902Emys cibollensis Cope
1902Emys cibollensis Hay
1906Echmatemys cibollensis Hay p. 29
2000Echmatemys cibollensis Zonneveld et al.
2018Echmatemys cibollensis 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
speciescibollensis()

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 2018“Echmatemys” cibollensis can be diagnosed as a member of Pan-Testudinoidea based on the extensive covering of the plastral scutes viscerally and is tentatively associated with Echmatemys based on the morphology of the epiplastra. “Echmatemys” cibollensis differs from other Echmatemys by the restriction of the short and wide gulars to the epiplastra and medial covering of the epiplastra by the humeral scutes.