message from Paul Willis

["Mickey P. Rowe" <mrowe@indiana.edu>]

Paul sent the following to the list, but it apparently didn't make it
here before he unsubscribed.  For others going out into the field,
this message would have come through without my intercession if Paul
had sent listproc the message:

set dinosaur mail postpone

instead of:

unsubscribe dinosaur

--
Mickey Rowe     (mrowe@indiana.edu)


---------------------------
To: dinosaur@usc.edu
From: pwillis@ozemail.com.au (Paul Willis)
Subject: Re: Warm bloodedness in archosaurs before dinosaurs


>   Crocs current niche and physical configuration appears to be a secondary
>adaptation.

Yup, OK so far.

>   According to an article on my website (I believe it is "croc with erect
>stance found") the first Crocodylians or Crocodylomorphs had a fully erect
>stance, a four chambered heart and were wholly terrestrial.


While the "fully erect" bit is almost certainly correct and the "wholly
terrestrial" is probably correct, what fossil evidence is there that
protosuchians and other early crocs had a four-chambered heart?

Cheers,

Paul


Dr Paul M.A. Willis
Consulting Vertebrate Palaeontologist
Quinkana Pty Ltd
pwillis@ozemail.com.au