†subfamily Gigantoproductinae Muir-Wood and Cooper 1960 (lamp shell)
Strophomenata - Productida - Monticuliferidae
Parent taxon: Monticuliferidae according to A. Williams et al. 2000
Sister taxa: Auriculispininae, Compressoproductinae, Devonoproductinae, Eoproductellinae, Lercarella, Monticuliferinae, Striatiferinae, Zhejiangoproductus
Subtaxa: Gigantoproductini, Semiplanini
Type: Gigantoproductus
Ecology: stationary low-level epifaunal suspension feeder