This picture is of a crinoid calyx fossil called Scytalocrinus robustus (Hall, 1861). Picture was taken in 2016 at Indiana University Depa...

Abatocrinus grandis crinoid lived on the seafloor in the Mississippian Period. This fossil is on display on the first floor of the Indi...

Cyathocrinites multbrachiatus crinoid lived on the seafloor in the Mississippian Period. This fossil is on display on the first floor o...

This Eretmocrinus granuliferus crinoid lived on the seafloor in the Mississippian Period. This fossil is on display on the first floor ...

Dorycrinus gouldi crinoid calyx and stem on display at the Indiana State Museum (Indianapolis - May 2012). This fossil is part of a larger...