Demospongea - Megalithistida

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: Nexospongiidae, Pleromatidae

Subtaxa: Cliefdenospongia, Eochaunactis, Epiplastospongia, Haplistionella, Rugospongia, Saccospongia

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Ecology: stationary epifaunal suspension feeder