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Gopherus brevisternus

Reptilia - Testudines - Testudinidae

Taxonomy
Testudo brevisterna was named by Loomis (1909). Its type specimen is ACM 2006 (holotype), a partial skeleton, and it is a 3D body fossil. Its type locality is Muddy Creek, which is in an Arikareean terrestrial horizon in the Upper Harrison Formation of Wyoming.

It was recombined as Gopherus brevisterna by Bramble (1982); it was recombined as Gopherus brevisternus by Reynoso and Montellano-Ballesteros (2004) and Vlachos (2018).

Synonymy list
YearName and author
1909Testudo brevisterna Loomis
1982Gopherus brevisterna Bramble p. 854
2004Gopherus brevisternus Reynoso and Montellano-Ballesteros p. 824
2018Gopherus brevisternus 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
Pantestudinidae
familyTestudinidaeBatsch 1788
genusGopherusRafinesque 1832
speciesbrevisternus()

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 2018Gopherus brevisternus can be diagnosed as a member of Gopherus based on the characters mentioned above. Gopherus brevisternus differs from other, early to middle Miocene Gopherus in the less differentiated neural series with an hexagonal neural IV and vertebrals that are much narrower than the pleurals. Gopherus brevisternus further differs from Gopherus mohavensis in the narrower cervical scute.