Demospongiae - Protomonaxonida - Leptomitidae
Parent taxon: Protomonaxonida according to R. M. Finks et al. 2004
See also García-Bellido et al. 2007
Sister taxa: Choiidae, Halichondritidae, Hamptoniidae, Hazeliidae, Heliospongiidae, Lobatospongia, Mahalospongiidae, Piraniidae, Sinospongiidae, Sollasellidae, Takakkawiidae, Tethyidae, Ulospongiellidae, Wapkiidae
Subtaxa: Leptomitella Leptomitus Paraleptomitella Pseudoleptomitus Wareiella
Type: Leptomitus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Triassic of United States (2: Idaho, Nevada collections)
• Silurian of Canada (2: British Columbia)
• Marjumian of United States (4: Utah)
• Cambrian of Australia (1), Canada (17: Brithish Columbia, British Columbia), China (33), Spain (2), United States (5: Pennsylvania, Utah, Vermont)
Total: 66 collections including 110 occurrences