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Hesperotestudo orthopygia

Reptilia - Testudines - Testudinidae

Taxonomy
Xerobates orthopygius was named by Cope (1878).

It was recombined as Testudo orthopygia by Cope (1878) and Hay (1902); it was recombined as Testudo (Hesperotestudo) orthopygia by Williams (1953); it was recombined as Geochelone (Hesperotestudo) orthopygia by Auffenberg (1962) and Auffenberg (1963); it was recombined as Geochelone orthopygia by Estes and Tihen (1964), Holman (1973) and Holman and Sullivan (1981); it was recombined as Hesperotestudo orthopygia by Vlachos (2018).

Synonyms
Synonymy list
YearName and author
1878Testudo orthopygia Cope
1878Xerobates orthopygius Cope p. 393
1878Xerobates cyclopygius Cope p. 394
1902Testudo cyclopygia Hay
1902Testudo orthopygia Hay
1952Testudo rexroadensis Oelrich
1953Testudo (Hesperotestudo) orthopygia Williams p. 548
1962Geochelone (Hesperotestudo) orthopygia Auffenberg p. 632
1963Geochelone (Hesperotestudo) orthopygia Auffenberg p. 89
1963Geochelone (Caudochelys) rexroadensis Auffenberg p. 93
1964Geochelone orthopygia Estes and Tihen p. 464
1973Geochelone orthopygia Holman p. 151
1973Geochelone nordensis Holman p. 154
1981Geochelone orthopygia Holman and Sullivan p. 140
2018Hesperotestudo orthopygia 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
genusHesperotestudo(Williams 1950)
speciesorthopygia()

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 2018Hesperotestudo orthopygia can be diagnosed as a member of Hesperotestudo based on the characters listed above. Hesperotestudo orthopygia differs from Hesperotestudo osborniana by its taller and shorter skull, frontals medially shorter than prefrontals, longer crista supraoccipitalis, larger dentary angle, usually seven neurals, longer pectorals medially, and deeper anal notch and from Hesperotestudo gilbertii by the frontals medially shorter than prefrontals, the contact between the parietal and the squamosal, the clear contact between the jugal and quadratojugal, and the short vomer that only contacts the anterior part of pterygoids.