Tessy Posted August 21, 2012 Share Posted August 21, 2012 Found in Michigan mix gravel, about 3 inches. The darker patch on the knob in question is a bit "shelly" to me. Link to comment Share on other sites More sharing options...
squalicorax Posted August 21, 2012 Share Posted August 21, 2012 It could be a brachiopod but its really hard to tell anymore information My Flickr Page of My Collection: http://www.flickr.com/photos/79424101@N00/sets Link to comment Share on other sites More sharing options...
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