Also, the living coelacanth lives in deep water near rocky volcanic
islands far from major scientific centers and has a lot of
cartilaginous components of its skeleton. None of these are conducive
of a good known fossil record. Many of the species known from
specimens widely spaced in time have such features that make them less
likely to be found as fossils-poorly preserved or inaccessible habitat
(deep ocean, highly erosional settings like rocky coasts or mountains,
confined to a remote area, etc.), unlikely to fossilize well (fragile
or not distinctive), etc.
"If it ain't broke don't fix it" applies well to evolution. Natural
selection provides pressure not to change features that work well,
unlike many bureaucracies. Thus, finding modern things that look much
like ancient fossils is no surprise. This and similar arguments may
reflect discredited ideas of evolution as progress. Coelacanths
aren't trying to evolve into something else; they're just trying to
survive and reproduce, which may involve changing or remaining the
same.
-- Dr. David Campbell 425 Scientific Collections University of Alabama "I think of my happy condition, surrounded by acres of clams" To unsubscribe, send a message to majordomo@calvin.edu with "unsubscribe asa" (no quotes) as the body of the message.Received on Thu Nov 29 14:01:37 2007
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