bird-mammal common ancestor
mwspitze at uci.edu
Sun Sep 11 23:14:17 EST 1994
In article <mturner.276.00145F21 at acpub.duke.edu>, mturner at acpub.duke.edu
(mel turner) wrote:
> it helps to keep in mind that all of these branching,
> diverging lineages have been evolving along their own paths for exactly the
> same amount of time and it is unlikely that any one of them would remain
> primitive in all respects. ("primitive" = the characteristics of the msot
> recent common ancestor of a group).
OK, with this in mind, how does one determine whether a similar brain
structure in animals as distantly related as mammals and birds is
evolutionarily homologous vs. an independently evolved analog? Fossils are
of no use in this case.
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