†family Halichondritidae Rigby 1986 (demosponge)
Demospongiae - Protomonaxonida - Halichondritidae
Parent taxon: Protomonaxonida according to R. M. Finks et al. 2004
See also Rigby and von Bitter 2005
Sister taxa: Choiidae, Hamptoniidae, Hazeliidae, Heliospongiidae, Leptomitidae, Lobatospongia, Mahalospongiidae, Piraniidae, Sinospongiidae, Sollasellidae, Takakkawiidae, Tethyidae, Ulospongiellidae, Wapkiidae
Subtaxa: Arborispongia Halichondrites Pohlispongia
Type: Halichondrites
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Jurassic of Germany (1 collection)
• Carboniferous of United States (1: Illinois)
• Delamaran of Canada (7: British Columbia)
• Cambrian of China (9), United States (1: Utah)
Total: 19 collections each including a single occurrence