Re: paleonet Origin of birds

[Tim Williams <tijawi@xxxxxxxxx>]

The basal crocodylomorph _Hallopus_ is rarely (if ever) included in phylogenetic analyses.  _Hallopus_ appears to have been a very agile form with an erect posture - but bipedal??!!

Dinogeorge@aol.com wrote:

In a message dated 4/13/2005 4:04:19 P.M. Pacific Standard Time,
tijawi@yahoo.com writes:

>>This is plain nonsense. Most non-dinosaurian archosaurs were obligate
quadrupeds or (at best) facultative bipeds: crocodilomorphs, lagosuchians,
rausiuchians, phytosaurs, proterosuchians, etc etc. These are the taxa that are
used as outgroups. Your statement makes absolutely no sense.<<

Look, we've been through this over and over again, in countless forums
(fora). You just don't get it, and I'm not going to beat my head against the wall
any further. Read the current issue of Nature for an article on ancestral
crocodylian endothermy. Study the fossil of the bipedal crocodilian Hallopus.

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