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Date: | Sat, 10 May 2008 15:20:51 -0500 |
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I'll have to agree with Tom, although it sure looks more like
Potamilus purpuratus, but that species isn't known from Lake Michigan.
>Date: Fri, 9 May 2008 10:42:25 +0000
>From: John Cramer <[log in to unmask]>
>Subject: Lake Mghigan elliptio ?
>
>A colleague has given me a freshwater shell he collected dead on the Michigan
>shore of Lake Michigan in 1962 in shallow water. He can't recall
>where. It's on
>my web site, http://www.oglethorpe.edu/faculty/%7Ej%5Fcramer/ ; click on
>"shells." It's a rather heavy shell with large, strong cardinal
>teeth. I think
>it's an elliptio complanata but the shape doesn't fit the pictures I have of
>that species very well. It does not have a posterior ridge, more like several
>week ones. Is the ID just obvious to anyone?
>
>
>
>Date: Fri, 9 May 2008 12:45:21 -0400
>From: G Thomas Watters <[log in to unmask]>
>Subject: Re: Lake Mghigan elliptio ?
>
>
>This is Potamilus alatus (Say, 1817) (a little worse for wear),
>known as the Pink Heelsplitter.
--
Kevin S. Cummings
Illinois Natural History Survey
1816 S. Oak
Champaign, IL 61820
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http://www.inhs.uiuc.edu/animals_plants/mollusk/
The Mussel Database Project
http://clade.acnatsci.org/mussel/
Join the Freshwater Mollusk Conservation Society Today!
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"When the going gets weird, the weird turn pro"
Hunter S. Thompson: 1937-2005
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