These pictures are what appear to be dorsal calyx cups from an Agassizocrinus  Troost 1850 ( nomen nudum ) Owen and Shumard 1852 fossil c...

These pictures show a crinoid stem fossil partially covered by bryozoan. What makes it interesting are the small tube like holdfasts that...

These pictures show a crinoid stem segment fossil. It was found in the Glen Dean Member of Grayson County, Kentucky, USA. The fossil date...