Genus
Icthyocrinus Conrad, 1842
List of species
1. Icthyocrinus pyriformis (Phillips, 1839) | Wenlock
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Echinodermata |
| Subphylum | Pelmatozoa |
| Class | Crinoidea |
| Superclass | Pentacrinoidea |
| Infraclass | Inadunata |
| Parvclass | Cladida |
| Superorder | Flexibilia |
| Order | Sagenocrinida |
| Family | Icthyocrinidae |
| Genus | Clidochirus |
| Icthyocrinus | |
| Species | pyriformis |