[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: theropod-bird eggshells
Gigi and Ralph,
Thanks for that abstract, which is very helpful, and strengthens my
interest in the eggshell microstructure. It was actually the eggshell
article (in the online Encyclopaedia of Dinosaurs) that first got me
interested. The phylogenetic implications almost jump out at you, without
all the arguments and counterarguments surrounding other characters (like
digit homologies---which give me a headache).
I guess it isn't surprising that Feduccia's book seems to be totally
silent on the subject of eggshell microstructure. Although I agree with
Feduccia and Martin on the subject of purely cladistic "classification", I
certainly cannot condone their disdain for cladistic "analysis" in general.
Cladistic analysis is sometimes done badly, and this should be criticized,
but attacking cladistic analysis across the board is unproductive and I
think this tends to make the so-called "Feducciaries" even more extreme.
If the cladists got this one right, I think they deserve credit for it,
but of course, this doesn't mean I will stop classifying birds as a separate
Class. Unless Feduccia and Martin come up with better counterarguments, I
plan to continue (as I did in 1994) showing Order Ornithischiformes as
sister to Order Saurischiformes---- and the latter Order
semi-paraphyletically giving rise to a separate Class for birds. The whole
Longisquama press-spectacle still makes me cringe----not only embarrassing,
but in my opinion it isn't nearly as informative as the eggshell
microstructure. Finally a character I can really get my teeth into, and I
can get away from digit homologies and proto-feathers for a while.
Thanks again, Ken Kinman
From: Gigi and Ralph <email@example.com>
To: firstname.lastname@example.org, email@example.com
Subject: Re: theropod-bird eggshells
Date: Wed, 19 Jul 2000 12:53:08 -0700
Quoting the Chiappe and Grellet-Tinner abstract, _DINOSAUR EGGSHELLS AND
OF BIRDS_, from the Florida Symposium on Dinosaur Bird Evolution, Ralph
> " Recent spectacular discoveries
> of dinosaur eggs containing embryos or eggs associated with brooding
> have furnished data confidently anchor eggshell characters with specific
Amend that to read "...furnished data to confidently anchor eggshell
with specific taxa."
-- Ralph W. Miller III firstname.lastname@example.org
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com