refers to the convex objects found on the underside of limestone layers formed from the molds of hollows dug by trilobites which were later filled with mud. Cincinnati, Ohio, .75" & 1.25"
Click on Thumbnails to enlarge
Click Here to Return to Fossil Gallery
© 2009-2020 North Coast Fossil Club
The North Coast Fossil Club and individual contributors
reserve the rights to all information, images, and content presented here on this website.