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Keeled sternum? [Jul. 24th, 2009|10:57 pm]
The Internet Pterosaur Fanciers Society

trypanocorax
[mood |curiouscurious]
[music |Lou Reed: Street Hassle]

Oh, but it's ben quiet here!  I am determined to make more of an effort...

Here's a thing that has been bothering me, and I would really appreciate any input on this.

As I think I've mentioned here before, I've only ever been able to find two really good, authoritative textbooks on the subject; Wellnhofer's "Illustrated Encyclopedia of Pterosaurs and Unwin's "The Pterosaurs from Deep Time".  I was reading both recently and found a major point of disagreement.  Wellnhofer says that pterosaurs had a keel or carina on the sternum for attatchment of the flight muscles, just as birds do.  Yet Unwin, writing much later (about 2005) states categorically that no pterosaur has EVER been found with a carina.  He describes the sternum as flat or "dished" and discusses the possibility of a keel made of cartilage, which he considers unlikely as even this would have left traces of an attatchment site on the bone. 
You'd expect books written at different times to disagree on some points, but this one is hard to reconcile.  I've been looking all over the net, and there seems to be general agreement that pterosaurs DID have a carina, so why on earth was Unwin claiming just a couple of years ago that they did not?  He clearly knows his stuff, and must have had a reason.  I just don't get it... Heeeeelp!
 
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Hmm... [Feb. 4th, 2009|12:33 pm]
The Internet Pterosaur Fanciers Society

alizara
[mood |awake]

This community is too quiet. And since no one else has posted this, I might as well.

http://www.newscientist.com/article/dn13298-tiny-perching-pterosaur-discovered.html?feedId=online-news_rss20
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Classification on Wikipedia [Dec. 21st, 2005|01:23 am]
The Internet Pterosaur Fanciers Society

nyctopterus
I should start ranking the Pterosauria as a class in the wikipedia's pterosaur taxoboxes.

Discuss.
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Church sucks, Pterosaurs rule [Sep. 13th, 2005|10:18 pm]
The Internet Pterosaur Fanciers Society
drugfree_junkie
I was sitting in church the other day (something I don't like doing) and the whole place suddenly got smashed and burned by pterosaurs. A few used their eye-lasors to destroy the walls while others used their fire breath to burn everyone except for me.
yeah
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(no subject) [Jul. 1st, 2005|06:35 pm]
The Internet Pterosaur Fanciers Society

trypanocorax

A brief hello to all, and many thanks to those responsible for this community. Much appreciated!

Here's a small pic by me

.

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I don't care WHAT Katelyn says, I love you Cody [Dec. 7th, 2004|07:56 pm]
The Internet Pterosaur Fanciers Society

kungfuechidna
[mood |jubilantjubilant]
[music |to Zion by Lauren Hill]

DUDE!!!!!
LOOK WHAT THEY FOUND!!!!

 

 

Not only is it a pterosaur egg WITH AN EMBRYO, it's a Pterodaustro guinazui egg!!!! My favorite pterosaur in the whole wide world!

Looks like I got MY Channukah present early.

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(no subject) [Jun. 17th, 2004|09:01 am]
The Internet Pterosaur Fanciers Society

ornithocheirus
SKRAWWK!

At last a place to rest my tired bones!
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Pterosaurs?! [Jun. 10th, 2004|08:52 pm]
The Internet Pterosaur Fanciers Society
tengoo
What the hell I hate pterosaurs! I'm glad they're extinct, fuzzy little snaggletoothed bastards.
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