|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Avetheropoda
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).
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.
|K. A. v. Zittel 1890||Schwungfedernfehlen. Flügelverkümmert,zuweilengänzlich fehlend. Brustbein ohne Crista, Furcula unvollständig oder fehlend. Wirbel mit sattelförmigen Gelenkflächen. Schwanzwirbel häufig frei. Rippen zweiköpfig, mit oder ohne Processus uncinatus.|