Species
Calathium formosum Billings, 1865
Synonyymit
1865 Calathium formosum. (N. sp.) — Billings , pp. 209, fig. text fig. 192
Luokittelu
| Organism group | Biota |
| Incertae sedis (fossils) | |
| Phylum | Receptaculita |
| Order | Receptaculitales |
| Family | Receptaculitaceae |
| Genus | Calathium |
| Species | formosum |