Demospongiae - Protomonaxonida - Hazeliidae
Parent taxon: Protomonaxonida according to R. M. Finks et al. 2004
See also Garcia-Bellido et al. 2011
Sister taxa: Choiidae, Halichondritidae, Hamptoniidae, Heliospongiidae, Leptomitidae, Lobatospongia, Mahalospongiidae, Piraniidae, Sinospongiidae, Sollasellidae, Takakkawiidae, Tethyidae, Ulospongiellidae, Wapkiidae
Subtaxa: Crumillospongia Falospongia Hazelia Lasiocladia Xylochos
Type: Hazelia
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Ordovician of the United Kingdom (5 collections)
• Delamaran of Canada (33: British Columbia)
• Cambrian of Canada (5: Brithish Columbia, British Columbia), China (15), Iran (1), Spain (2), United States (7: Pennsylvania, Utah)
Total: 68 collections including 102 occurrences