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Mesosauria (disused)

Synonyms
Synonymy list
YearName and author
1887Proganosauria Baur p. 103
1890Proganosauria Zittel p. 592
1892Mesosauria Seeley p. 604
1892Proganosauria Seeley p. 604
1898Mesosauri Gadow p. 23
1903Mesosauria Osborn p. 276
1903Proganosauria Osborn p. 276
1903Proganosauria Stefano p. 54
1904Proganosauria Osborn p. 109
1910Mesosauri Jaekel p. 334
1937Proganosauria Roxo p. 43
1946Proganosauria Kuhn p. 58
1954Mesosauria Haughton and Brink p. 3
1954Mesosauria Huene p. 26
1969Mesosauria Carroll p. 167
1988Mesosauria Carroll
1989Mesosauria Gauthier et al. p. 340
2007Mesosauria Karl et al. p. 67

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
RankNameAuthor
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
suborderMesosauria
suborderMesosauria

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
H. F. Osborn 1903 (Proganosauria)Aquatic Diaptosauria. Greatly elongated face. Slender prehensile teeth. Vertebrae expanded superiorly (i.e.,neurocentra), perforated below by notochord, amphicoelous; hypocentra generally wanting. Caudals with 'splitting point.' Ribs slender, proximally attached to grooves in pleurocentra, expanded distally. Pectoral girdle plate-like,without sutural division of procoracoid and coracoid. Pelvic girdle plate-like, with broad pubes perforated by obturator foramen, and more elongate ischia. Five free distal tarsalia.