Re: The Eternal Question: Lips or Skin?

[Danvarner@aol.com]

>Quoting Mark Hallett:
>
>"Crocs (excluding
>extinct terrestrial forms) don't have to deal with the potential dessication
>of lip and mouth mucosa that other tetrapods do, since they're either in the
>water or close to it. 


       About dessication. Today, any bird that shows up on my 100+ degree(F) 
porch has its mouth wide open. That's one way you can tell it's hot. I wonder 
if Tyrannosaurus did the same thing on a particularly blistering day. It 
certainly isn't a problem for George, our Red-winged Lipless Blackbird. DV