†family Thomasariidae Cooper and Dutro 1982 (lamp shell)
Rhynchonellata - Spiriferida - Thomasariidae
Parent taxon: Reticularioidea according to A. Williams et al. 2006
Sister taxa: Elythidae, Reticulariidae, Xenomartiniidae
Subtaxa: Thomasaria
Type: Thomasaria
Ecology: stationary epifaunal suspension feeder
Distribution:
• Carboniferous of Australia (3 collections)
• Devonian of Afghanistan (1), Belgium (2), the Russian Federation (4), United States (4: Iowa, New Mexico)
Total: 14 collections each including a single occurrence