Parent taxon: Heliolitida according to Y. N. Cui et al. 2022
See also Hill 1981
Sister taxa: Halysitina, Heliolitina
Subtaxa: Coccoserididae Ellisitidae Palaeoporitidae Pragnellia Pycnolithidae Urceopora
Ecology: stationary epifaunal suspension feeder-photosymbiotic
Distribution:
• Carboniferous of Canada (1: Nova Scotia collection)
• Silurian of Canada (6: Ontario, Quebec), China (1), Estonia (9), India (2), United States (1: Ohio)
• Chazyan of United States (6: New York)
• Ordovician of Australia (23), Canada (20: Manitoba, Northwest Territories, Nunavut, Ontario, Quebec), China (2), Estonia (9), Mongolia (1), Norway (1), the Russian Federation (3), Sweden (1), United States (56: Alaska, Indiana, Kentucky, Michigan, New Mexico, Ohio, Texas)
Total: 142 collections including 162 occurrences