Onychocrinus

Onychocrinus
Temporal range:
Fossil of Onychocrinus species from Carboniferous of United States
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Crinoidea
Order: †Taxocrinida
Family: †Synerocrinidae
Genus: †Onychocrinus
Lyon and Casseday, 1860

Onychocrinus is an extinct genus of feathered crinoids that lived during the Carboniferous period, approximately 353.8 to 318.1 million years ago. It belonged to the family Synerocrinidae.