Helcionopsis radiatum
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| Helcionopsis radiatum Temporal range: | |
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| Drawing of dorsal view of the shell of Helcionopsis radiatum. Head region is on the left. | |
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| Drawing of lateral view of the shell of Helcionopsis radiatum. Head region is on the left. | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Monoplacophora |
| Order: | Tryblidiida |
| Family: | †Tryblidiidae |
| Genus: | †Helcionopsis |
| Species: | †H. radiatum |
| Binomial name | |
| †Helcionopsis radiatum | |
| Synonyms | |
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Helcionopsis radiatum is an extinct species of paleozoic monoplacophoran in the family Tryblidiidae.
This species was first named as Tryblidium radiatum and described from Silurian in crystalline limestone of Wialmsudd near Fårösund in Sweden by Gustaf Lindström in 1884.[1] Lindsröm found only one specimen.[1]