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Branch-based clade: Ornithurae Haeckel 1866 [Gauthier 1986] (bird) [unverified]
 Entity: 

Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia

Phylogeny

Branch-based clade Ref: J. Gauthier, 1986: 13. [implicit]

Defined by included taxon (and all taxa more closely related to it than to the excluded taxon)

Aves (Clade) Linnaeus 1758 [Gauthier 1986], nom. cl. inval. Ref: J. Gauthier, 1986: 13 ("Extant birds").
Ichthyornis (Genus) Marsh, 1872 Ref: J. Gauthier, 1986: 13 ("all other taxa, such as ... and Hesperornithes").

Defined by excluded taxon

Archaeopteryx (Genus) Meyer, 1861 Ref: J. Gauthier, 1986: 13.
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Last updated: 1 Feb 2024