Art:
         I have seen pernobilis at about 45mm and turbinum at about 60mm.

        The living fossils would make much more sense because that genus is
consistantly found in such deep water. "Newer" species are found in the
shallower water, whereas the "older" are found in the deeper regions. This is
the same with the Pleurotamariidae. 200 million years ago, they were abundant
in the shallow water grassbeds, but now they are common on the walls of deep
sea trenches or mud flats. I actually was about to comment on the fossil bit
because I was looking at the name of the type for the genus stenorhytis, and
it is a fossil (forget which one tho). Also there are only about 3 "valid"
species that are "recent" in that genus:  Dianae, Pernobilis, and Turbinum,
and they are found in very similar habitats.

Just more pointless info.
Sarah


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Sarah Watson
Silver Spring MD
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" One cannot collect all the beautiful shells on the beach. One can only
collect a few, and they are more beautiful if they are few. "
-Anne Morrow Lindbergh