†family Saccospongiidae Rigby and Dixon 1979 (demosponge)
Demospongiae - Megalithistida - Saccospongiidae
Full reference: J. K. Rigby and O. A. Dixon. 1979. Sponge fauna of the Upper Silurian Read Bay Formation, Somerset Island, District of Franklin, Arctic Canada. 53(3):587-627
Parent taxon: Megamorina according to R. M. Finks et al. 2004
Sister taxa: Archaeodorydermatidae, Nexospongiidae, Pleromatidae
Subtaxa: Cliefdenospongia Eochaunactis Epiplastospongia Haplistionella Rugospongia Saccospongia
Type: Saccospongia
Ecology: stationary epifaunal suspension feeder
Distribution:
• Silurian of Canada (1: Nunavut collection)
• Ordovician of Argentina (2), Australia (1), Canada (2: Newfoundland and Labrador), United States (3: Tennessee)
Total: 9 collections including 13 occurrences