Iocrinus

Iocrinus is an extinct genus of crinoid (sea lilies and feather stars). It is an early form of crinoid, from the Ordovician rock of North America, England, and Gilwern Hill, Powys in Wales.

Iocrinus
Iocrinus subcrassus
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Crinoidea
Order:	Disparida
Family:	Iocrinidae
Genus:	Iocrinus

Selected species

• Iocrinus brithdirensis
• Iocrinus crassus
• Iocrinus pauli
• Iocrinus shelvensis
• Iocrinus similis
• Iocrinus subcrassus
• Iocrinus trentonensis
• Iocrinus whitteryi

References

• Paleobiology Database entry
• Iocrinus in the Ordovician of England and Wales
• Stuart M. Kelly, Functional Morphology and Evolution of Iocrinus: An Ordovician Disparid Inadunate Crinoid, Indiana University, 1978.