SailingAlongToo Posted January 5, 2016 Hi Herb. Your specimen actually looks more like a Chesapecten madisonius (Say, 1824) rather than a jeffersonius. https://vmnhpaleontology.wordpress.com/2009/09/28/chesapecten-jeffersonius/ http://pubs.usgs.gov/pp/0861/report.pdf (Page 11 of 46 in electronic document, but labeled Page 5 in actual report) Just thought I would offer......... Link to comment
Herb Posted January 6, 2016 Hard to say, they all look alike. This one is 6.5 " wide, a little larger than the average C.madisonius ? Thanks for the info. Link to comment
Herb Posted January 6, 2016 the square cross-section of the plications makes me think jeffersonius Link to comment
Recommended Comments