Thursday, March 1, 2012

Prepped Calymene breviceps Molts

Probably the most commonly found trilobite in the Waldron Shale of Indiana, the Calymene breviceps. These two fossils appear to be molts which were shed during the Middle Silurian Period (about 425-420 million years ago). See some more outstanding prepared trilobites like this one at the Weeks Trilobite web site.

Thanks to Mark for letting me photograph these.