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Ratitae

Reptilia - Avetheropoda

Taxonomy
Ratitae was named by Merrem (1813). It is extant.

It was reranked as the order Ratitae by Zittel (1890); it was synonymized subjectively with Dromaeognathae by Hay (1902); it was reranked as the unranked clade Ratitae by Baur (1887), Gadow (1898), Gardiner (1982) and Livezey and Zusi (2007).

It was assigned to Aves by Baur (1887); to Neornithes by Gadow (1898); to Aves by Zittel (1890) and Andrews (1906); to Aves by Gardiner (1982); and to Palaeognathae by Livezey and Zusi (2007).

Sister taxa
Apterygimorphae, Casuariimorphae, Struthionimorphae

View classification of included taxa

Synonymy list
YearName and author
1813Ratitae Merrem
1887Ratitae Baur p. 102
1890Ratitae Zittel p. 825
1898Ratitae Gadow p. 30
1906Ratitae Andrews p. 258
1982Ratitae Gardiner p. 229
2007Ratitae Livezey and Zusi p. 89

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
RankNameAuthor
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptora
Paraves
classAves
PygostyliaChiappe 2002
Ornithothoraces
OrnithuromorphaChiappe et al. 1999
subclassOrnithurae
subclassNeornithesGadow 1893
superorderPalaeognathae(Pycraft 1900)
Ratitae(Merrem 1813)
Ratitae(Merrem 1813)

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
K. A. v. Zittel 1890Schwungfedernfehlen. Flügelverkümmert,zuweilengänzlich fehlend. Brustbein ohne Crista, Furcula unvollständig oder fehlend. Wirbel mit sattelförmigen Gelenkflächen. Schwanzwirbel häufig frei. Rippen zweiköpfig, mit oder ohne Processus uncinatus.