Demospongiae - Streptosclerophorida
Full reference: R. M. Finks, R. E. H. Reid, and J. K. Rigby. 2004. Porifera (revised) (Demospongea, Hexactinellida, Heteractinida, Calcarea). Treatise on Invertebrate Paleontology E revised(3):1-872
Parent taxon: Tetractinomorpha according to R. M. Finks et al. 2004
Sister taxa: Alpinothalamiidae, Atractosella, Axinellida, Belemnospongia, Criccospongiidae, Incrustospongia, Petrosites, Spirophorida, Syltrochos
Subtaxa: Eutaxicladina
Ecology: stationary epifaunal suspension feeder
Distribution:
• Permian of Canada (15: British Columbia, Nunavut collections), Svalbard and Jan Mayen (1), United States (5: Texas)
• Carboniferous of the United Kingdom (2)
• Devonian of Australia (3), United States (5: Kentucky, New York, Tennessee)
• Silurian to Devonian of United States (1: Oklahoma)
• Silurian of Canada (12: Northwest Territories, Nunavut), China (1), United States (8: California, Indiana)
• Ordovician of Argentina (1), Australia (5), Canada (1: Quebec), the United Kingdom (1), United States (33: Iowa, Kentucky, Michigan, Minnesota, Missouri, Ohio, Tennessee, Utah)
Total: 94 collections including 107 occurrences