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Re: Aetodactylus, the Dallas pterosaur



On Apr 29, 2010, at 6:14 AM, Jaime Headden wrote:

> 
> Dave,
> 
>   I may have confused you and the site of the response, although I do 
> not think I am crazy in this respect as a reply of the form you tend to 
> give was provided FOR *Zhengyuanopterus* on the apparent 
> non-ornithocheiroid-like nature of the teeth.


> Zhengyuanopterus [sic] Zhenyuanopterus


> 
>   Nonetheless: You and Mark 
> Witton are not apparently thinking of the same thing, though, when you 
> write "But there are other such taxa in the Solnhofen formation, all 
> smaller" and Mark is thinking of apparent lonchodectids.
> 
>   So to play your game, what other "taxa" in the Solnhofen, all smaller 
> than *Aetodactylus*, could you be thinking of?

They're all in a clade. All mislabeled. So best to wftp. Wish me luck.
I know next to nothing about Lonchodectids and I have no images of same in my 
data. So, Mark has the ace over my deuce here. He could more right.

David Peters




> 
> Cheers,
> 
> Jaime A. Headden
> The Bite Stuff (site v2)
> http://qilong.wordpress.com/
> 
> "Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)
> 
> 
> "Ever since man first left his cave and met a stranger with a
> different language and a new way of looking at things, the human race
> has had a dream: to kill him, so we don't have to learn his language or
> his new way of looking at things." --- Zapp Brannigan (Beast With a Billion 
> Backs)
> 
> 
> 
> 
> 
> ----------------------------------------
>> Date: Thu, 29 Apr 2010 05:39:37 -0500
>> From: davidpeters@att.net
>> To: qi_leong@hotmail.com
>> CC: dinosaur@usc.edu
>> Subject: Re: Aetodactylus, the Dallas pterosaur
>> 
>> Jumping the gun, dude. Not a ctenochasmatid. Sorry. WFTP.
>> 
>> With regard to Zhenyuanopterus, Jaime, I think you have me mistaken for some 
>> other whipping boy.
>> 
>> here's what I said here on the DML:
>> http://dml.cmnh.org/2010Mar/msg00129.html
>> 
>> Nothing here on the Hone blog:
>> http://archosaurmusings.wordpress.com/2010/03/06/is-it-safe-the-dentists-nightmare-meet-zhenyuanopterus/
>> 
>> David Peters
>> 
>> 
>> 
>> 
>> On Apr 29, 2010, at 5:15 AM, Jaime Headden wrote:
>> 
>>> 
>>> 
>>> Forgive me if I am repeating something others know, but ornithocheiroids 
>>> described to date appear to have an mediolaterally expanded 
>>> rostrum/mandible tip. This alone is irrelevant to the specimen's 
>>> affinities, if this is one of the two apparent criteria being used to 
>>> imploy its affinities, I would consider it fascile. However, you mention 
>>> also that the mandible is very shallow, which would apply to this 
>>> hinted-at, yet obvious Solnhofen "type" of pterosaur (for the record, 
>>> ctenochasmatids are apparently more widespread than the Solnhofen 
>>> Limestones of the Late Jurassic of Germany). If this were true, you might 
>>> be on firmer ground, but my records indicate that ctenochasmatid mandibles 
>>> appear particularly deep, although not deeper than most pterosaur 
>>> mandibles, and also feature unique retroarticular morphology.
>>> 
>>> I would also overlook this casual hand wave to the ctenochasmatids, were it 
>>> not for an inferrence you made to Dave Hone on the apparent identity of the 
>>> ornithocheiroid *Zhengyuanopterus* where the presence of long, large and 
>>> numerous teeth were applied as ctenochasmatic features -- *Aetodactylus* 
>>> has well-spaced teeth with pedunculate sockets that differentiate it from 
>>> most other pterosaurs, yet links it with anhanguerine-line 
>>> ornithocheiroids. Therefore, it is the opposite of your inferrence. Are you 
>>> assessing ALL of the information, or picking one bit here and there to play 
>>> with?
>>> 
>>> Cheers,
>>> 
>>> Jaime A. Headden
>>> The Bite Stuff (site v2)
>>> http://qilong.wordpress.com/
>>> 
>>> "Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)
>>> 
>>> 
>>> "Ever since man first left his cave and met a stranger with a
>>> different language and a new way of looking at things, the human race
>>> has had a dream: to kill him, so we don't have to learn his language or
>>> his new way of looking at things." --- Zapp Brannigan (Beast With a Billion 
>>> Backs)
>>> 
>>> 
>>> 
>>> 
>>> 
>>> ----------------------------------------
>>>> Date: Thu, 29 Apr 2010 04:42:46 -0500
>>>> From: davidpeters@att.net
>>>> To: dinosaur@usc.edu
>>>> Subject: Aetodactylus, the Dallas pterosaur
>>>> 
>>>> Myers, Timothy S.(2010) 'A new ornithocheirid pterosaur from the Upper 
>>>> Cretaceous (Cenomanian- Turonian) Eagle Ford Group of Texas', Journal of 
>>>> Vertebrate Paleontology, 30: 1, 280 — 287
>>>> 
>>>> I don't know of any ornithocheirid with such a dorsoventrally flattened 
>>>> mandible with a slight dishy curve. But there are other such taxa in the 
>>>> Solnhofen formation, all smaller. Methinks it's more like one of those.
>>>> 
>>>> David Peters
>>>> St. Louis
>>> 
>>> _________________________________________________________________
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>> 
>                                         
> _________________________________________________________________
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