Genus
Nucleurus Ramsköld, 1986
Aiheeseen liittyvät julkaisut
Edgecombe, G. D., Ramsköld, L. 1996. The "Encrinurus" variolaris plexus (Trilobita, Silurian): relationships of Llandovery species. Geobios 29, 2, 209-233. DOI:10.1016/S0016-6995(96)80045-3
Männil, Reet 1977. Some new Llandoverian encrinurid trilobites of the East Baltic area. Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология 26, 1, 46-56. DOI:10.3176/chem.geol.1977.1.08
List of species
1. Nucleurus abyssalis (Männil, 1977) | Raikküla Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Phacopida |
| Suborder | Cheirurina |
| Family | Encrinuridae |
| Subfamily | Encrinurinae |
| Genus | Balizoma |
| Distyrax | |
| Elsarella | |
| Encrinuroides | |
| Encrinurus | |
| Erratencrinurus | |
| Nucleurus | |
| Species | abyssalis |
| Genus | Struszia |
| Wallacia |