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Re: vampire ptero toe



Hi all.
Last November , during the Eudimorphodon symposium
Chris Bennett made a very fine communication on this pterosaur, giving a nice and detailed reconstruction of the skull and wing structure. Chris suggested that its life style might be compared to that of nightjars and other big mouthed birds who chase insects on wing, in dim light or even during night. Maybe not a vampire, but nocturnal however... ;-)


                                        Silvio Renesto


At 22.29 17/12/2003 +0100, you wrote:
----- Original Message -----
From: "David Peters" <davidrpeters@earthlink.net>
Sent: Sunday, December 14, 2003 5:05 AM

> For those of you who saw my presentation in St. Paul on the vampire
> pterosaur, Jeholopterus, I have one modification to make. Pedal digit V,
> although described as sharp and it appears sharp, is not sharp. I had it
> sliding under the skin of the victim to ensure perfect adhesion.

Which would hurt the victim, so that the pterosaur would risk being squished
against the next tree, IMHO.

> An ungual attached to its ventral side (dorsal while fully flexed) would
> have prevented surgical entry. I'm finding lots of pedal digit V unguals
> on primitive pterosaurs.

Interesting...

> Haven't noticed or heard anything yet to
> invalidate the vampire hypothesis.

I've read that several people who've seen your presentation (which I
haven't) simply can't see all those vampire-like features. With their
excessively long, narrow wings, anurognathids look more like swifts than
like vampires to me...

_

"there's treasure everywhere"
                        (from a strip of Calvin & Hobbes)

"The bad man is the job of the good man"
                                (Lao Tzu)


Prof. Silvio Renesto Department of Structural and Functional Biology Università degli Studi dell'Insubria via Dunant 3 21100 Varese Tel. +39-0332-421560

e-mail: silvio.renesto@uninsubria.it