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Re: PARROTS, HOATZINS & DEINONYCHUS
At 05:19 PM 12/21/98 +0000, email@example.com wrote:
>Alan Gishlick (Yale) gave an excellent and very nicely illustrated
>talk on the form and function of the hand in _Deinonychus_. Locking
>mechanisms at the proximal ends of the manual phalanges prevent
>'upwards' bending (extension) of the dromaeosaurid digits, unlike in
>other types of theropods, and when digit III is flexed it actually
>rotates medially and approaches the thumb.
Hmm, this reminds me of some descriptions of the manus of _T. rex_.
Or am I projecting?
> *Maybe* the third digit
>can therefore act as a ventral brace to the robust second digit, and
>*maybe* this has something to do with the famous crossed digits of
>some of the _Archaeopteryx_ specimens.
May the peace of God be with you. firstname.lastname@example.org