Conoclypus

Conoclypus - from the Greek words (= cone) + (= disc) - is a genus of sea urchins belonging to the family Conoclypeidae.
Description.
These fossil echinoderms are characterized by a conical calcareous structure. They were slow-moving semi-infaunal detritivore, living in the late Eocene until the Miocene.
Distribution.
Species of this genus have been found in Miocene of Austria and in Eocene of Germany, Italy, Slovenia and Pakistan.