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RE: 11th specimen of Archaeopteryx
I appreciate the absolutely informative and instructive email Denver Fowler
replied with to my generalized statments regarding claw morphology and extant
versus nonextant paravian theropods. The citations provided within by Fowler in
refuting my statement, rather than labelling statements "you are wrong," while
at the same time requiring me to provide statements to back up mine is the
epitome of providing accurate and complete disclosure when making such
generalized statements. I thank Fowler for his ultimately instructive reply to
Jaime A. Headden
The Bite Stuff (site v2)
"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
> Date: Mon, 7 Nov 2011 22:02:41 +0000
> From: email@example.com
> To: firstname.lastname@example.org
> Subject: Re: 11th specimen of Archaeopteryx
> From: Jaime Headden <email@example.com>
> > This is not entirely consistent with arboreality, although that is
> > possible, because climbing birds do not use just one ungual for climbing...
> Yes, I agree.. oh hang on (!):
> >..., they use all forward-projecting unguals,
> Do they? Which climbing birds? What do climbing bird feet look like? Are they
> different from perching bird feet? do you have a citation that explains this?
> (hint, you are wrong).
> > In birds, while the unguals are graded largest to smallest moving from toe
> > two through toe four, then toe one,
> Are they? which birds? do you have a citation that shows this? (hint, you are
> >the unguals even in raptorial birds are relatively similar in size
> Are they? which raptors? do you have a citation which shows this? (hint: you
> are wrong)
> >(cassowaries are freaks with straight pdII-3u's, ignore them)
> Correct. The only thing you got right so far.
> >; in dromaeosaurids, the pdII-3u is often twice the length of any other
> >ungual, a suspiciously bizarre distinction that enforces a functional
> >difference, especially in the strong curvature relative to the other
> >unguals. And recall, despite the huge!
> pdII-3u, the other pedal unguals are _terrestrially_ adapted, even in
> *Archaeopteryx lithographica*. Moreover, it is questionable how one arrives
> at a conclusion that the highly recurved, huge forward ungual is indicative
> of "perching" or arboreality to begin with, merely that climbing is _not_
> Paper is nearly here (hopefully b4 xmas). That should give you the time to go
> back and read some papers on claw morphology. You need to.
> PS. I wrote Fowler et al. 2009. It has lots of claw data in it. Your email
> Denver Fowler