Crotalocrinites is a genus of extinct crinoid belonging to the family Crotalocrinitidae. These feather stars were stationary intermediate-level organisms feeding on suspension epifauna. They lived in the Silurian period, from the Upper Wenlock age (428.2 ± 1.5 to 422.9 ± 2.8 mya) to the Ludlow age (422.9 ± 1.5 to 418.7 ± 2.8 mya).
Distribution Devonian of Australia, Kazakhstan, Mongolia. Silurian of Norway, Russia, Ukraine, the United Kingdom, and United States (Illinois, Indiana, Iowa, Wisconsin).
Species Crotalocrinites cora Crotalocrinites rugosus
References Biolib Paleobiology Database Sepkoski, Jack Sepkoski's Online Genus Database