Genus
Gigantoproductus Prentice, 1950
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Strophomenata |
| Order | Productida |
| Suborder | Productidina |
| Superfamily | Linoproductoidea |
| Family | Monticuliferidae |
| Subfamily | Gigantoproductinae |
| Tribe | Gigantoproductini |
| Genus | Gigantoproductus |
| Species | giganteus |