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Meiolaniformes

Reptilia -

Discussion

Meiolaniformes is the stem-based definition of Meiolaniidae. Meiolaniformes refers to all the taxa more related to Meiolania platyceps than to Cryptodira or Pleurodira

Synonymy list
YearName and author
2013Meiolaniformes Sterli and de la Fuente
2014Meiolaniformes Perea et al.
2015Meiolaniformes Rhodin et al.
2015Meiolaniformes Sterli
2015Meiolaniformes Sterli et al.
2017Meiolaniformes Joyce
2019Meiolaniformes Sterli and de la Fuente

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
RankNameAuthor
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
Perichelydia
Meiolaniformes
Meiolaniformes

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
J. Sterli 2015Representatives of Meiolaniformes are currently diagnosed relative to other turtles by the presence of a large prefrontal exposure, a lack of a frontal contribution to the orbit, the presence of a ventral crest on the vomer, a crista supraoccipitalis that extends posteriorly well beyond the foramen magnum, formed cervical vertebrae, opisthocoelous vertebrae in the anterior part of the tail, randomly distributed small pits on the surface of the dermal bones of the skull and shell and anteriorly inflected marginal scute sulci along the carapacial margin
J. Sterli and M. S. de la Fuente 2019It differs from the basal members of Testudinata (taxa outside Perichelydia clade) by the reduction of the processus interfenestralis of the opisthotic, absence of the processus basitrabecularis, and an enclosed canalis cavernosus.