†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
Distribution:
• Carboniferous of Algeria (2 collections), Australia (2), Canada (3: Alberta), China (8), Ireland (2), Spain (1), Turkey (2), the United Kingdom (34), United States (1: Washington, Oregon, Idaho, Montana, Nevada, Utah, California)
Total: 55 collections including 83 occurrences