Species
Ichtyocrinus laevis Conrad, 1842
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Echinodermata |
| Subphylum | Pelmatozoa |
| Class | Crinoidea |
| Superclass | Pentacrinoidea |
| Infraclass | Inadunata |
| Parvclass | Cladida |
| Superorder | Flexibilia |
| Order | Sagenocrinida |
| Family | Homalocrinidae |
| Genus | Ichtyocrinus |
| Species | gotlandicus |
| laevis |