Species
Nonparactocrinus laevis (Jaekel, 1918)
Synonyymit
1918 Paractocrinus laevis n. sp. — Jaekel , pp. 22, fig. 16
1976 Nonparactocrinus laevis (aekel, 1918) — Arendt , pp. 76
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Echinodermata |
| Subphylum | Pelmatozoa |
| Class | Crinoidea |
| Order | Hemistreptocrinida |
| Family | Hemistreptocrinidae |
| Genus | Nonparactocrinus |
| Species | laevis |