Neoavians Temporal range: Paleocene – Holocene, Possible Late Cretaceous origin based on molecular clock[2][3]
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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 | |
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).[4] Almost 95% of the roughly 10,000 known species of extant birds belong to the Neoaves.[5]
The early diversification of the various neoavian groups occurred very rapidly around the Cretaceous–Paleogene extinction event,[6][7] and attempts to resolve their relationships with each other have resulted initially in much controversy.[8][9]
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