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Re: more henpecking on 2008-beta WWD

hammeris1@bellsouth.net wrote:
So was there a particular reason why 'polar allosaur' was dropped in favor of a more general 'carnosaur' in this version? Did they decide that it was more bipolar than polar?

'cos the big Oz Cretaceous theropods can't be tied to particular families? So far, they are known from scrappy material and good footprints, which provide palaeoecological data but are not particularly good for phylogenetics.

And why was Deinosuchus referred to as an alligator rather than a crocodilian?
Just American bias? Or is the snout more alli than croc in current circles?

It's more 'alligatory' .

One of the most jarring changes is the dropping [or at least de-emphasizing] of the meteor hit
off Yucatan - was this a time constraint or is the K-T boundary no longer thought to be the finish line?

Some people are talking about multi-causal factors over the latter parts of the Maastrichtian, rather than a single cause at the boundary (see some of the books by Peter Ward on the subject). Not that there's a consensus for the extinction being a result of mulitple impacts, or impacts + Deccan Traps volcanism, but maybe the producers were talking to someone like Keller who's been taking aim at the 'K-T extinction = Chicxulub' idea for a while (e.g. http://geoweb.princeton.edu/people/faculty/keller/kelleresr62.pdf).

Colin McHenry
Computational Biomechanics Research Group http://www.compbiomech.com/
School of Engineering (Mech Eng)
University of Newcastle
NSW 2308

t: +61 2 4921 8879