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Bidentalia

Synonyms
  • Dicynodon rectidens was named by Owen (1876). Its type specimen is NHMUK 47057, a partial skull, and it is a 3D body fossil. Its type locality is Fort Beaufort, which is in a Wuchiapingian/Changhsingian terrestrial horizon in South Africa.

    It was synonymized subjectively with Daptocephalus leoniceps by Broom (1932); it was synonymized subjectively with Dicynodon lacerticeps by Brink (1986); it was considered a nomen dubium by Kammerer et al. (2011).
Synonymy list
YearName and author
1876Bidentalia Owen
1876Dicynodon rectidens Owen
2009Bidentalia Kammerer and Angielczyk
2011Bidentalia Fröbisch and Reisz
2011Bidentalia Kammerer et al.

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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
Synapsida()
Therapsida()
Anomodontia(Owen 1859)
Chainosauria()
Dicynodontia(Owen 1859)
Bidentalia()
Bidentalia()

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
R. Owen 1876A long ever-groeing tusk in each maxillary; premaxillaries connate, forming with the lower jaw a beack-shaped mouth, probably sheathed with horn. Sacrum of more than two vertebrae amphicoelian; limbs ambulatory.
C. F. Kammerer and K. D. Angielczyk 2009Autapomorphies of Bidentalia recognized in common by Angielczyk (2007), Fröbisch (2007), and Fröbisch & Reisz (2008) are: (1) paired anterior palatal ridges that do not converge posteriorly present on the premaxilla; (2) postorbitals slope ventrolaterally and overlap parietals nearly completely.