Friday, April 18, 2014

Dolatocrinus triangulatus? Crinoid Calyx Fossil

This appears to be a Dolatocrinus triangulatus? crinoid calyx fossil. It was found in the Thunder Bay Formation of Alpena Michigan, USA. It dates to the Middle Devonian Period (Erian).

Learn more at the web site.

Thanks to Mary Ann for letting me take some pictures of this fine specimen.