Re: matrilineal dinosaurs

["Rob Gay" <rob@dinodomain.com>]

>The robust morphotypes are usually considered the females in fossil
theropods, and the gracile ones the males. i.e., natal males would not mate
but immigrant males would.<
As HP Headden wrote, there is no real way to determine sex in theropods that
really holds up to scrutiny (at least that I know of). While the
determination of the presence or absence of sexual dimorphism can be gleamed
from some groups of dinosaurs, I think that trying to determine the sex of a
fossil dinosaur is probably a pipe dream. If someone proves me wrong,
however, I'd be very excited. ;)
Peace,
Rob

Student of Geology
Northern Arizona University
P.O. Box 20840
Flagstaff, Az. 86011
http://dinodomain.com
http://www.cafepress.com/robsdinos
"A _Coelophysis with feathers?"