squalicorax Posted December 20, 2012 Share Posted December 20, 2012 I am having a hard time figuring out this external mold of a trilobite from the racine formation of south eastern wisconsin Its less than a cm in width My Flickr Page of My Collection: http://www.flickr.com/photos/79424101@N00/sets Link to comment Share on other sites More sharing options...
piranha Posted December 20, 2012 Share Posted December 20, 2012 Looks like a Calymene to me Link to comment Share on other sites More sharing options...
squalicorax Posted December 20, 2012 Author Share Posted December 20, 2012 Well not so tough. Id probably have to agree as they are the most common trilobite in these rocks with cheirurus coming in second. My Flickr Page of My Collection: http://www.flickr.com/photos/79424101@N00/sets Link to comment Share on other sites More sharing options...
Caleb Posted December 20, 2012 Share Posted December 20, 2012 My first thought was the rare phacopid that can be found down there. I can't remember the name off hand though. Caleb Midwestpaleo.com Link to comment Share on other sites More sharing options...
Caleb Posted December 20, 2012 Share Posted December 20, 2012 (edited) Wait, nevermind, is that the axial lobe on the left? If so, then Calymene. Edited December 20, 2012 by Caleb Caleb Midwestpaleo.com Link to comment Share on other sites More sharing options...
squalicorax Posted December 20, 2012 Author Share Posted December 20, 2012 I agree. You can see some pistules where the glabella lobe might be 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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