[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Dilophosaurus Forelimb Bone Maladies
Why then have forelimbs that are so exceptionately prone to pathology,
including such injuries as would result from use of the forelimb in
predation (e.g. the probable avulsion on the left thumb), if they
weren’t actually of much use for that purpose?
Generally, one would expect a structure that gets used frequently in
activity involving significant stresses to be particularly prone to injury.
Potential activity-related forelimb pathology in this and other
theropods could very well be a direct result of their strenuous
activity, the animal’s ability to survive without them notwithstanding
(unless the argument was only that they weren’t so useful that they were
absolutely essential to the animal’s survival).
Nobody would claim that a crocodile’s jaws aren’t all that useful for
predation after all, and yet there is ample documentation of crocodiles
that survived having their snouts bitten off.
On 26.02.2016 02:44, Tim Williams wrote:
The authors propose that during the long healing period, the use of
the forelimbs by this smashed-up_Dilophosaurus_ was severely
compromised. But it wasn't fatal. This supports the interpretation
that theropod forelimbs were not all that useful for predation - even
when the forelimbs were healthy and undamaged.