[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re:prolacertiformes as arboreal leapers,.



-----Original Message-----
From: Renesto Silvio <renesto@mailserver.unimi.it>
To: larryf@capital.net <larryf@capital.net>
Cc: dinosaur@usc.edu <dinosaur@usc.edu>
Date: Friday, March 16, 2001 10:38 AM
Subject: Re:prolacertiformes as arboreal leapers,.

>>Dave Peters calls the prolacertiforms "terrestrial" forms. Although by
this
>>(I`m sure) he didn`t mean they didn`t climb trees, I would go one step
>>further, and call ,the majority of the group "arboreal". IMHO.
>>
>I also agree with you and George that David is right about strict
>relationships between prolacertiform and pterosaurs.
>  I find difficult however to find *most* of them arboreal (it is OK for
>Longisquama;  Sharovipteryx? I dont' know, the 6m long Tanystropheus
>surely not!).
> On some prolacertiforms (= Macrocnemus, Langobardisaurus and Cosesarus) I
>basically share David Peters opinion: they  were probably facultative
>bipedal runners  in the manner of some modern lizards (David and I have a
>submitted  paper on this, together with Fabio dalla Vecchia).


PS....I`ve seen pictures of Tanystropheus depicted in a bipedal stance as
well. In primates, bipedalism came about as a consequence of arborality.
Perhaps a parallel development was the case for Prolacertiforms???