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Re: Ruben Strikes Back
In a message dated 9/24/99 1:37:59 PM EST, firstname.lastname@example.org writes:
<< However one thing is clear with this hypothesis- If we maintain that the
flight is primitive for a subset of dinosauria, say theropoda then one must
envision multiple losses of flight along each of the lines of theropods.
This is obviously the least parsimonious explanation when compared to the
conventional model. >>
Well, secondary flightlessness has occurred in dozens of modern avian
lineages independently and convergently. Why shouldn't this also be the case
with theropods, particularly since those flying ancestral forms were not
nearly as derived for flight as are modern birds?