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Re: Ichthyornis ancestors(was Re: birds/dino-birds with teeth



You wrote:

>What do the very early ichthyornithiforms and hesperorniforms look like?  I
do
>remember talk (from HP Marjanovic, actually) about volant hesperorns, but
aside
>from that, I am ignorant.
>
>Dan
>
In a somewhat older post from HP Mickey Mortimer about the Mesozoic birds in
Russia and Mongolia (based on the excellent book "The Age of Dinosaurs in
Russia and Mongolia), he said something about a volant Hesperorn based on
the internal large holes of the metatarsus. Better check the archives, it is
in there.
Not that the animal is known from a great deal of material...after all, we
are here speaking about _Russian_ and _Mongolian_ bird fossils. ;)

Rutger Jansma