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Re: pterosaurs, bats, flying theropods



In case you were wondering what it was to which Jaime was responding:

---------- Forwarded message ----------
Cc: dinosaur@usc.edu, stefanpickering2002@yahoo.com
From: Michael Habib <mbh3q@cms.mail.virginia.edu>
To: qilongia@yahoo.com
Date: Mon, 23 Dec 2002 20:18:25 -0500
Subject: Re: pterosaurs, bats, flying theropods

>Bats, pterosaurs, and birds do not overlap in the fossil all
together, relating no point where all three could interact; only
birds + pterosaurs, and birds + bats ever occur in the same area at
the same time, never pterosaurs + bats.<

True, but it is quite likely that bats predate the K/T.  Molecular
dating suggests a Cretaceous origin, and the fossil record does to
some extent as well, given how early in the Cenozoic advanced bats
appear (including some extant genera in the Eocene).  Either
Chiropterans have a Cretaceous origin, or they underwent a massive
diversification in the Paleocene.

--Mike Habib
----- end forwarded message