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zakur
2nd November 2003, 06:54 PM
Mashed fossil might be vampire; experts scoff (http://www.centredaily.com/mld/centredaily/news/7122145.htm)

A fossilized Chinese pterosaur – one of those flying reptiles that lived alongside dinosaurs - was a blood-sucking vampire, according to a St. Louis artist.

More than 100 million years ago, he believes, the monster would have alighted on dinosaurs much like a mosquito, piercing thick skin with its ghastly fangs and lapping up blood with its tongue.

"It's like a Hieronymus Bosch nightmare," said David Peters, who works in advertising by day.

By night, Peters has made a hobby of computer-enhancing photos of fossils, then reinterpreting the bones in ways that often rile professional pterosaur experts. But at the biggest fossil forum of the year - the annual Society of Vertebrate Paleontology meeting, held this month in St. Paul, Minn. - Peters had a captive audience.

[...]

A pterosaur expert who heard his talk called it "fun but unconvincing."

"It is interpretation, there's no doubt about it," Peters says. "Whether I've interpreted it correctly is up to the next graduate student."I'd like to see Peters' rendering of the creature.

neutrino_cannon
2nd November 2003, 07:09 PM
w00t! Another pterosaur thread!

Some of the earlier toother pterosaurs had pretty wicked looking maws, and I wouldn't be supprised if there are a goodly number of pterosaur species we haven't discovered yet or will never discover (in fact, I'd be suprised were that not the case).

The little pterosuars of the triassic and jurrasic must have had pretty high reproductive rates, ergo fast evolution, so specialized ones would not at all suprise me.

Of course, I am just guessing.

WildCat
2nd November 2003, 09:11 PM
Originally posted by neutrino_cannon
w00t! Another pterosaur thread!
Then you should see this article: (http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v425/n6961/full/425910b_fs.html)
Far more convincing, in my view, is Witmer and colleagues' proposal that the floccular lobes were responsible for processing large volumes of sensory data generated by the wing membranes. This is a plausible idea, because in other vertebrates the floccular lobes receive sensory inputs from skin and muscles. New, extraordinarily well-preserved pterosaur material from Germany12 and China13 shows that the wing membranes were highly complex, containing structural fibres, blood vessels and a fine network of muscles. These features would have given the wings the ability to collect and transmit sensory information about local conditions within the membranes, enabling pterosaurs to build up a detailed map of the forces experienced by the wings from moment to moment. Processing via the floccular lobes could have allowed them to respond very rapidly, through localized contraction or relaxation of muscle fibres within the membrane and coordination with fore- and hind-limb movement. Equipped with their 'smart' wings, pterosaurs would have had excellent flight control. Despite their antiquity, they could even have outperformed modern birds and bats.
New theory on pterosaur flight!

neutrino_cannon
2nd November 2003, 10:08 PM
Originally posted by WildCat

Then you should see this article: (http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v425/n6961/full/425910b_fs.html)

New theory on pterosaur flight!

Interesting...

I noticed they mentioned that pterosaurs had relatively small brains, when compared to birds.

I thought the more advanced pterosaurs had huge brains.