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Re: Sapeornis and other Mesozoic Birds

On 9/13/06, T. Michael Keesey <keesey@gmail.com> wrote:
I only know of two definitions of Aves which satisfy PhyloCode rules:

- Gauthier and de Queiroz, 2001: "The crown clade stemming from the
most recent common ancestor of Ratitae (Struthio camelus Linnaeus
1758), Tinamidae (Tetrao [Tinamus] major Gmelin 1789), and Neognathae
(Vultur gryphus Linnaeus 1758)."

- Sereno 2005: "The least inclusive clade containing Archaeopteryx
lithographica Meyer 1861 and Passer domesticus (Linnaeus 1758)."

There has been some discussion recently on the ISPN's forum:
(The ISPN is the organization associated with the PhyloCode: the
International Society for Phylogenetic Nomenclature.)

*The clade stemming from the most recent common ancestor of _Struthio camelus_ and _Passer domesticus_. *The clade stemming from the first vertebrate to evolve fligth feathers and wings.

Both referred by Benton MJ 2000 - Stems, nodes, crown clades, and
rank-free lists: is Linnaeus dead? Bio. Rev. 75: 633-48.


Roberto Takata