Family Nephtyidae Grube 1850 (scale worm)
Polychaeta - Phyllodocida - Nephtyidae
Parent taxon: Phyllodocida according to C. J. Glasby et al. 2000
See also Schram 1979
Sister taxa: Acoetidae, Alciopidae, Aphroditidae, Aphroditiformia, Chrysopetalidae, Eulepethidae, Glyceridae, Goniadidae, Hesionidae, Ichthyotomidae, Iospilidae, Lacydoniidae, Lopadorrhynchidae, Nautiliniellidae, Nereididae, Paralacydoniidae, Pholoidae, Phyllodocidae, Pilargidae, Pisionidae, Polynoidae, Pontodoridae, Sigalionidae, Sphaerodoridae, Syllidae, Tomopteridae, Typhloscolecidae
Subtaxa: Astreptoscolex
Ecology: epifaunal detritivore
Distribution: found only at MV 7106, Supercrop Quarry, Bear Gulch (Carboniferous of Montana)