As of August 2016, this fossil was on display at the Musée de Mineralogie (Mineralogy Museum) located at the MINES ParisTech, 60 Bouleva...

These pictures show Phanocrinus parvaramus crinoid calyx fossils. They were found in the Glen Dean Member of Grayson County Kentucky US...

Here is an image of the bottom cup of a Phacelocrinus-longidactylus (McChesney, 1860) crinoid calyx. It existed the the Mississippian Per...