Fossil Cystoid Pleurocystites Trilobite Crinoid Age

Up for bdi is a beautiful grouping of pleurocystites squamosus cystoids from the bobcaygeon formation here in brechin, ontario. This is a great example of the fine prseervation of ordovician echinoderms from this area. These cystoids as you can see are outstanding specimens contrasting nicely against the gray matrix making this a very displayable piece. The limestone block weighs 2 lbs.