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Fortunodon

- Dicynodontidae

Synonymy list
YearName and author
2000Vivaxosaurus Kalandadze and Kurkin
2003Vivaxosaurus Ivakhnenko
2008Vivaxosaurus Ivakhnenko
2009Vivaxosaurus Kammerer and Angielczyk
2011Vivaxosaurus Kammerer et al. p. 138
2012Fortunodon Kurkin

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
RankNameAuthor
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Synapsida()
Therapsida()
Anomodontia(Owen 1859)
Chainosauria()
Dicynodontia(Owen 1859)
familyDicynodontidaeOwen 1859
subfamilyDicynodontinaeOwen 1859
genusFortunodon

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
N. N. Kalandadze and A. A. Kurkin 2000 (Vivaxosaurus)Medium-sized dicynodont, skull 40 cm long. Upper jaw lacking teeth, except for two large canine alveoli. Canines oriented anteroventrally. Preparietal short, round, strongly deepened, and reaching level of postorbital arch. Parietal region short and narrower than interorbital region. Parietals deepened to form well-pronounced parietal groove. Postorbitals forming dorsolateral part of temporal fossa and not overlapping parietals dorsally. Postfrontals with processes reaching parietals at level of posterior margin of parietals foramen. Palatines lacking contact with premaxilla, being separated by narrow flanges of maxillae. Ectopterygoid absent as individual element. Palatal surface of premaxilla positioned at angle of 140-150° to basicranial plane of skull. Posteriorly, quadratic rami of pterygoids widely divergent. Occiput moderately broad; occipital plane deepened and inclined slightly posteriorly. Basioccipital lacking intertuberal ridge. Occipital flange of squamosal with curvature in central part.