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Protenodontosaurus

Reptilia - Placodontia

Taxonomy
Protenodontosaurus was named by Pinna (1990) [Sepkoski's age data: Tr Carn]. Its type is Protenodontosaurus italicus.

It was assigned to Protenodontosauridae by Rieppel (2000); to Placochelyida by Rieppel (2001); and to Placodontia by Sepkoski (2002).

Species
P. italicus (type species)

Synonymy list
YearName and author
1990Protenodontosaurus Pinna
2000Protenodontosaurus Rieppel
2001Protenodontosaurus Rieppel pp. 63-68, 78-79
2002Protenodontosaurus Sepkoski

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
suborderSauropterygia
orderPlacodontiaCope 1871
suborderCyamodontoideaNopcsa 1923
PlacochelyidaRomer 1956
genusProtenodontosaurusPinna 1990

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. †Protenodontosaurus Pinna 1990
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Diagnosis
ReferenceDiagnosis
O. Rieppel 2001Single (posterior) maxillary tooth, separated by a wide diastema from premaxillary tooth (teeth?); maxilla almost as high as it is long in lateral view because of distinct ascending process; prefrontal not extending far down along the anterior margin of the orbit; orbital margin of frontal rather straight, postorbital not extending beyond the midpoint of the upper temporal fossa along its lateral margin; vomers much enlarged and reaching far anteriorly into rostrum; exoccipitals meet dorsal to the occipital condyle (convergent in Cyamodus); basioccipital tuber and ventral flange of opisthotic meeting each other ventral to the passage of the internal carotid, and meeting the posterior margin of the basicranium (convergent in Placochelys).