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On Sun, 23 Jul 2000 email@example.com wrote:
Same thing as phytosaurian.
amphIsbaenian. "worm lizards".
Actinopterygii is the sister group to Sarcopterygii. It includes the
ray-finned, bony fish, while Sarcopterygii includes lungfish, coelacanths,
I believe this is when the sacral vertebrae fuse to the ilium? Or is it
just when they fuse with each other? (I'm a lot more up on taxonomy than
Belonging to Ornithurae. Gauthier defined it as all animals sharing more
recent ancestry with modern birds than with _Archaeopteryx_, but this is
unnecessarily divergent from the traditional usage. A better definition
would be (_Hesperornis_ + Neornithes).
Beloning to Neornithes, the crown clade containing the most recent common
ancestor of extant birds and all of its descendants. (Incidentally, I and
others prefer "neornithean", since "neornithine" looks like it should
refer to Neornithinae. I don't think there is a Neornithinae, but this
keeps it consistent with the vernacular forms of Enantiornithes
[enantiornithean] and Enantiornithinae [enantiornithine], both of which
are valid taxa. The usage of the terms enantiornithine/neornithine for
members of Enantiornithes/Neornithes is pretty prevalent, but potentially
> carinate birds
Birds belonging to Carinatae (_Ichthyornis_ + Neornithes).
T. Michael Keesey <firstname.lastname@example.org> | AIM <Ric Blayze> | ICQ <77314901>
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