Species
Sphaerexochus calvus McCoy, 1846
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Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Phacopida |
| Suborder | Cheirurina |
| Family | Cheiruridae |
| Subfamily | Sphaerexochininae |
| Genus | Sphaerexochus |
| Species | calvus |
| laciniatus | |
| latifrons | |
| mirus | |
| scabridus |