Re: Brachiosaur Defense

["Jaime A. Headden" <qilongia@yahoo.com>]

Matt Bonnan (probably beaming after getting the Romer
Prize at SVP) wrote:

<<The arctometatarsalian condition does not appear to
grant springy-ness to jumps>>

and Larry Febo wrote:

<It was something I read. Pg 26 from " Encyclopedia of
Dinosaurs". Three theories mentioned. One of them (at
least) mentions "stored potential energy from the
ground-reaction force at footfall as metatarsal III
moves proximally",...and "release of the stored
potential energy at takeoff, adding thrust to the
hindlimb". I just read it again, and I`m still not
sure I understand it.....8^).>

  I'm sure a proper clarification of the functional
locomotor possibilities suggested by arctometatarsaly
in the pes of some maniraptoriform theropods is best
described in Holtz (1994a) only briefly recapped by
Hutchinson and Padian (1997).

  Holtz, T.R., Jr. 1994a. The arctometatarsalian pes,
an unusual structure of the metatarsus of Cretaceous
Theropoda (Dinosauria: Saurishcia). _JVP_ 14: 480-519.

  Hutchinson, J.R. and Padian, K. 1997.
Arctometatarsalia. p. 24-27. (in Currie and Padian
(eds.) _The Encyclopedia of Dinosaurs_ [Academic
Press]).

  Larry, you have one, but you should really get the
other if you don't have it.


=====
Jaime "James" A. Headden

"Come the path that leads us to our fortune."

Qilong---is temporarily out of service.
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