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Diaptosauria (disused)

Reptilia

Taxonomy
Diaptosauria was named by Osborn (1903). It is extant.

It was assigned to Diapsida by Osborn (1903), Osborn (1904), Williston (1917) and Roxo (1937).

Synonymy list
YearName and author
1903Diaptosauria Osborn pp. 456, 466
1904Diaptosauria Osborn p. 107
1917Diaptosauria Williston p. 414
1937Diaptosauria Roxo p. 44

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
RankNameAuthor
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
superorderDiaptosauria
superorderDiaptosauria

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.

Superor. Diaptosauria Osborn 1903
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Diagnosis
ReferenceDiagnosis
H. F. Osborn 1903Primitive or stem Diapsida. Skull with two temporal arches. Vertebrae typically amphiccelous, perforate or imperforate by notochordal canal; hypocentra present throughout column or reduced in dorsal region. Ribs originally on all vertebrae anterior to the 8th to 10th caudals, mainly single-headed; capitular attachments, hypocentral, pleurocentral, or neurocentral. Abdominal ribs or plastron always present. Coracoid and procoracoid separate in primitive forms but early uniting into a single bone. Pubis and ischium in continuous contact, or secondarily separated by pubo-ischiadic fenestra.