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Fraserosphenodon latidens

Reptilia - Sphenodontidae

Taxonomy
Clevosaurus latidens was named by Fraser (1993). Its type specimen is VMNH 524, a mandible, and it is not a trace fossil. Its type locality is Cromhall Quarry Site 5, which is in a Carnian fissure fill limestone/mudstone in the United Kingdom. It is the type species of Fraserosphenodon.

It was recombined as Fraserosphenodon latidens by Herrera-Flores et al. (2018).

Synonymy list
YearName and author
1993Clevosaurus latidens Fraser p. 137 fig. 2
2018Fraserosphenodon latidens Herrera-Flores et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
RankNameAuthor
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Lepidosauromorpha(Benton 1983)
superorderLepidosauria()
familySphenodontidaeCope 1871
Opisthodontia
genusFraserosphenodon
specieslatidens()

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.

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Diagnosis
ReferenceDiagnosis
N. C. Fraser 1993A moderate sized clevosaur in which the skull probably attained 5.0 cm in length. The additional teeth on the maxilla possess posterolingual flanges which are developed medially rather than posteriorly. Additional teeth on the dentary are roughly twice as wide as they are long; saddle shaped in transverse section; with a short anterolateral flange and rounded in medial profile. Wear facets on the teeth are consistent with propalinal movements of the jaws.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Created: 2017-04-17 15:16:03
Modified: 2017-04-17 15:16:03
Source: subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Carroll 1988

Age range: base of the Carnian to the top of the Norian or 237.00000 to 208.50000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Carnian237.0 - 228.0United Kingdom (England) Clevosaurus latidens (type locality: 13182)
Norian228.0 - 208.5USA (Texas) Clevosaurus latidens (13266)