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Otwayemys

Reptilia

Synonymy list
YearName and author
1998Otwayemys Gaffney et al. p. 3
2012Otwayemys Anquetin p. 34 fig. 10
2013Otwayemys Pérez-García and Murelaga
2013Otwayemys Sterli and de la Fuente
2014Otwayemys de la Fuente et al.
2015Otwayemys Sterli
2015Otwayemys Sterli et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
RankNameAuthor
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
Perichelydia
Meiolaniformes
genusOtwayemys

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.

G. †Otwayemys Gaffney et al. 1998
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Otwayemys cunicularius Gaffney et al. 1998
Diagnosis
ReferenceDiagnosis
E. S. Gaffney et al. 1998A primitive eucryptodire lacking mesoplastra, having formed vertebral articulations, and a first thoracic rib reaching to the axillary buttress. Skull poorly known, with large orbits and a flat, unexpanded triturating surface as in Ordosemys; lower jaws deep with an unexpanded triturating surface. Carapace outline similar to Xinjiangchelys, ovate with roughly parallel sides and a recessed anterior margin. Bridge peripherals guttered as in Xinjiangchelys, but in contrast to Ordosemys. Vertebral scales much wider than long in contrast to Xinjiangchelys, Ordosemys, and Sinemys. Plastron with broad epiplastra and a full set of extragular and gular scales as in Xinjiangchelys, but in contrast to Dracochelys; extragular scales relatively small, in contrast to Xinjiangchelys; entoplastron ovoid with gular scales extending onto it; strong posterolateral processes on entoplastron in contrast to Xinjiangchelys and Ordosemys; large hyoplastron/hypoplastron fontanelle in contrast to Xinjiangchelys; inframarginal scales reduced to three; inguinal buttress terminates on peripheral six rather than on peripheral seven or eight as in Xinjiangchelys, Ordosemys, Dracochelys, and Sinemys. Cervical vertebral formula probably ) 2) )3) )4) )5( (6( (7( (8), eighth cervical known to be biconvex and one anterior cervical (probably 5) biconcave as in Ordosemys but in contrast to Xinjiangchelys, which is amphicoelous; neural spine higher than in Ordosemys; transverse processes double as in Ordosemys. Differs from Chelycarapookus in being 20% larger and having a large hyoplastron/hypoplastron fontanelle, a smooth rather than rugose surface texture, and a larger posterior plastral lobe relative to the anterior plastral lobe.
J. Sterli 2015Otwayemys cunicularius can be diagnosed as a meiolaniform by the presence of strongly anteriorly curved sulci between marginal scutes, the presence of small pits that decorate the surface of all dermal bones and the presence of formed vertebrae.