I have no idea what senescence of a species means, or, indeed, if
it means anything at all. As someone else on this thread (isn't this
a wonderful new word?!) said, conditions in an area can change,
and then a species can have a tough time. As a matter of fact,
one of the fascinating things about the fossil record is that some
species hardly change at all. I believe that is true of some
Radiolaria and Foraminifera.
--------------------
Harry Cook
15032 84 Ave
Edmonton, AB T5R 3X5
phone: 780-489-8563
email: hcook@oanet.com
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