Here's a more recent thread on the subject:

http://www.renderosity.com/messages.ez?Form.ShowMessage=1070165

I have most of ScottA's dinosaurs. Let me know which one you need, and I'll email it to you. I have both Godzillas, also, but they're too large for me to email.

You'll find more links to free and commercial dinosaurs in this thread:

http://www.renderosity.com/messages.ez?Form.ShowMessage=1213040