Re: "Acro" ribcage dilemma

["David Marjanovic" <david.marjanovic@gmx.at>]

> In the show, Dale Russell suggests something to the
> effect that because the ribcage of _Acrocanthosaurus_ was so narrow, the
> animal would have relied solely on an anaerobic metabolism when chasing
prey
> since it would not have had the capacity to inhale much air in times
> strenuous activity.  That said, that's about all that the explanation the
> viewer got, and so I was just wondering if anyone might be able to
elaborate
> on this for me.

Were air sacs taken into account???

> Were there any other theropods that might have exhibited
> this adaptation?

AFAIK all theropod ribcages are very narrow.