Iocrinus
Iocrinus is an extinct genus of crinoid. It is an early form of crinoid, from the Ordovician rock of North America, England, and Gilwern Hill, Powys in Wales.
Selected species
Iocrinus brithdirensisIocrinus crassusIocrinus pauliIocrinus shelvensisIocrinus similisIocrinus subcrassusIocrinus trentonensis- ''Iocrinus whitteryi''