RE: On the subject of mysterious absences...The Answer

[Nick Pharris <npharris@umich.edu>]

Quoting Tim Williams <twilliams_alpha@hotmail.com>:

> David Marjanovic wrote:
>
> > >  wonder if Pterodaustro is the first known filter feeder to have evolved?
> >
> > Among reasonably big vertebrates, you mean? Leedsichthys is older (Middle
> > Jurassic and later).
>
>
> _Pseudocetorhinus_ is even older (Triassic).  It was an elasmobranch 
> (maybe a synechodontiform).

What about _Mesosaurus_ (Permian)?

--
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Nicholas J. Pharris
Department of Linguistics
Max Planck Institute for Evolutionary Anthropology
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