-------------------- Begin Original Message --------------------
Message text written by "Brian D."
"
Dear Dr.,
I am having a problem reseraching some info on the evolution of whales. I
have a friend who has a problem with the Theory of Evolution, and claims
that when the blowhole moved "upwards" in the skull and the echolocation
device in the nasal cavity developed, the two would have run into each
other, thus invalidating evolutionary science. I am not familiar with the
anatomy of ceteacens (sp?), and my guess was that the echolocation
developed later in the whale line. Could you give me some advice/references
and data to asnwer this problem?
Thank you for your time,
Otaku_Faith@yahoo.com
"
-------------------- End Original Message --------------------
I am not an anatomist but I think there is every reason to suspect that the
blowhole moved to its present position as cetaceans adapted to the sea and
that echolocation came as whales moved into deeper water and needed extra
tools for hunting in the darkness of the depths.
As land-based creatures, the ancestors of whales would presumably not have
needed echolocation or an organ that would produce this.
I think evolutionary science is safe in any case.
This archive was generated by hypermail 2b30 : Tue Oct 22 2002 - 13:31:52 EDT