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Myosauridae (disused)

Taxonomy
Myosauridae was named by Kitching (1968). It is not extant.

It was reranked as the unranked clade Myosauridae by Kammerer and Angielczyk (2009).

It was assigned to Dicynodontia by Hammer and Cosgriff (1981); and to Kistecephalia by Kammerer and Angielczyk (2009).

Synonymy list
YearName and author
1968Myosauridae Kitching
1981Myosauridae Hammer and Cosgriff
2009Myosauridae Kammerer and Angielczyk

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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)
superfamilyEmydopoideavan Hoepen 1934
Kistecephalia()
Myosauridae(Kitching 1968)
Myosauridae(Kitching 1968)

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
C. F. Kammerer and K. D. Angielczyk 2009Autapomorphies of Myosauridae recognized by Angielczyk (2007), Fröbisch (2007), and Fröbisch & Reisz (2008) are: (1) nasal bosses absent; (2) palatal surface of the palatine without evidence of a keratinized covering. The most recent detailed diagnoses available for Myosaurus can be found in Cluver (1974) and Hammer & Cosgriff (1981). However, these workers did not include what is perhaps the most distinctive feature of the skull of Myosaurus in their diagnoses, a posterior median palatal ridge that is Tshaped in cross-section and flanked by two laterally enclosed channels that lie between it and the palatal grooves that characterize all emydopoid dicynodonts. Cluver (1974) did however discuss these features in some detail elsewhere in his redescription of Myosaurus.