Pangalloanserae is a

clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...

of birds defined in a 2001 study by Jacques Gauthier and

Kevin de Queiroz Kevin de Queiroz is a vertebrate, evolutionary, and systematic biologist. He has worked in the phylogenetics and evolutionary biology of squamate reptiles, the development of a unified species concept and of a phylogenetic approach to biologica ...

as "most inclusive clade containing Galloanserae but not

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

". It contains crown Galloanserae as well as all stem-galloanserans.

References

{{Taxonbar, from=Q88077133 Neognathae Extant Maastrichtian first appearances