Iocrinidae
Classification
Phylum: Echinodermata
Class: Crinoidea
Order: Disparida
Family: Iocrinidae (Moore & Laudon, 1943)
Cincinnatian Genera: Iocrinus
Geologic Range
Middle Ordovician – Late Ordovician
Common Paleoecology
Iocrinidae is an extinct family of stationary intermediate-level epifaunal suspension feeders
Description of the Family
- Compound radial in ray only
- Superradial supports anal X on left side with free arm on right
- Arms with many isotomous branches
- Column transversely pentagonal to pentastellate
- Composed of alternating thick and thin columnals
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Treatise on Invertebrate Paleontology, Part T (1978):
Treatise on Invertebrate Paleontology, Part T (1978):
- Compound radial in C ray only; superradial supports anal X on left side and free arm on right. Arms with many isotomous branches. Column transversely pentagonal to pentastellate, composed of alternating thick and thin columnals.
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Iocrinus
