Anthozoa - Cystiphyllida - Tryplasmatidae
Parent taxon: Cystiphyllida according to D. Hill 1981
See also Hill 1956 and Merriam 1972
Sister taxa: Cystiphyllidae, Digonophyllidae, Fletcheriidae, Goniophyllidae, Holmophyllidae, Palaeocyclidae
Subtaxa: Loboplasma Porpites Storthygophyllum Thecaspinellum Tryplasmatinae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Permian of the Russian Federation (4 collections)
• Devonian of Australia (17), Austria (1), Canada (2: Nunavut), China (5), Italy (3), Mongolia (1), the Russian Federation (18), Spain (2), Tajikistan (19), United States (23: Alaska, Nevada, New York, Pennsylvania), Vietnam (6)
• Silurian to Devonian of Australia (1), Pakistan (1), Tajikistan (2)
• Silurian of Australia (17), Belarus (1), Canada (24: Manitoba, New Brunswick, Northwest Territories, Nunavut, Quebec, Québec, Yukon), China (24), the Czech Republic (2), Greenland (1), India (2), Japan (2), Mongolia (5), the Russian Federation (11), Svalbard and Jan Mayen (1), Sweden (8), Tajikistan (4), Ukraine (11), the United Kingdom (2), United States (36: Alaska, California, Indiana, Iowa, Kentucky, Nebraska, Nevada, New Hampshire, New York, Oklahoma, Pennsylvania, Virginia), Uzbekistan (1), Venezuela (1)
• Ordovician to Silurian of Canada (2: Northwest Territories), United States (1: Alaska)
• Ordovician of Australia (18), Canada (4: Manitoba), China (9), Estonia (9), Norway (3), Sweden (2), United States (5: Alaska, Nevada, Utah, Texas)
Total: 311 collections including 377 occurrences