†tribe Grantonini Waterhouse 2004 (lamp shell)
Rhynchonellata - Spiriferida - Trigonotretidae
Full reference: J. B. Waterhouse. 2004. Permian and Triassic stratigraphy and fossils of the Himalaya in northern Nepal. Earthwise 6:1-259
Parent taxon: Trigonotretinae according to J. B. Waterhouse 2004
Sister taxa: Aperispirifer, Brachythyrinella, Frechella, Neilotreta, Sulciplica, Tasmanospirifer, Trigonotreta, Trigonotretini
Subtaxa: Koenigoria Trigorhium
Ecology: stationary epifaunal suspension feeder
Distribution:
• Permian of Afghanistan (2 collections), Australia (40), India (3), Pakistan (13), the Russian Federation (1), Tajikistan (2)
• Carboniferous of Iran (4)
Total: 65 collections including 66 occurrences