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Conchologists of America List <[log in to unmask]>
Date:
Thu, 2 Sep 1999 21:39:21 EDT
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Hi James,
I believe Norrisia norrisi Sowerby is the only living member of the genus.
On an old listing of fossil species I have, I see a Norrisia microphalus
listed, from the Eocene deposits of the Gosport Formation in Alabama.  I know
nothing about it.
Norrisia has a really neat operculum.  It looks like a coil of rope.
Regards,
Paul M.

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