Neoaves

Neoaves is a clade that consists of all modern birds (Neornithes or Aves) with the exception of Palaeognathae (ratites and kin) and Galloanserae (ducks, chickens and kin). Almost 95% of the roughly 10,000 known species of extant birds belong to the Neoaves.

Neoavians
Temporal range: Paleocene – Holocene, Possible Late Cretaceous origin based on molecular clock
Great crested grebe (Podiceps cristatus)
House sparrow (Passer domesticus)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Infraclass: Neognathae
Clade: Neoaves
Sibley et al., 1988
Clades

The early diversification of the various neoavian groups occurred very rapidly around the Cretaceous–Paleogene extinction event, and attempts to resolve their relationships with each other have resulted initially in much controversy.

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