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Re: EXTRAPOLATING TRENDS FROM LACKING DATA



In a message dated 98-05-06 05:26:02 EDT, Tetanurae@aol.com writes:

<< The only preserved tail to date known from
 any therizinosaur does seem to somewhat shorter than the tails of similarly
 sized "normal" theropods.  In theropods as a whole, there does appear to be a
 "trend" in tail reduction from say coelophysoids to enantiornithines, a lot
of
 which has to do with the reduction of the caudofemoralis muscle and the
 transition to a "calf-based" locomotor system rather than an MCF based
system.
  >>

I sure hope you're not trying to say that segnosaur tails became shorter
because they share a more recent common ancestor with enantiornithes than
with, say, dromaeosaurids. That would be compounding the folly of placing
segnosaurs into Theropoda in the first place.