[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
RE: Evolution of tyrannosauroid bite power
> Bipedal dinosaurs are balance beams; if it's really important to have
> the mass up forward, you can always accept being a bit slower and having
> a larger tail to balance forward mass. So the idea that there was
> compelling selection for lighter forearms doesn't have obvious merit,
> especially since T. rex arms are highly derived relative to the
> ancestral tryannosauroid condition.
One possible contributing factor behind reducing the forelimbs is to mimimize
rotational inertia. This may also have played a role in the arm-folding
mechanism of maniraptorans (and others?).
i’m is proud to present Cause Effect, a series about real people making a