Family Longosomatidae Hartman 1944 (worm)
Sedentaria - Spionida - Longosomatidae
Parent taxon: Spionida according to C. J. Glasby et al. 2000
Sister taxa: Apistobranchidae, Chaetopteridae, Magelonidae, Poecilochaetidae, Spionidae, Trochochaetidae, Uncispionidae
Subtaxa: none
Distribution: there are no occurrences of Longosomatidae in the database