†family Loxonematidae Koken 1889 (snail)
Synonym: Holopellidae Koken 1896
Full reference: E. Koken. 1889. Ueber die Entwickelung der Gastropoden vom Cambrium bis zur Trias. Neues Jahrbuch für Mineralogie, Geologie und Palaeontologie 6: 305–484. 6:305-484
Parent taxon: Loxonematoidea according to P. Bouchet et al. 2005
Sister taxa: Abyssochrysidae, Acrospira, Coelostylinidae, Crassimarginatidae, Palaeozygopleuridae, Pragozyga, Scoliostomatidae, Soleniscidae, Spirostylidae, Vetotuba, Zygopleuridae
Subtaxa: Aulacostrepsis, Australoxa, Clathronema, Cookiloxa, Heideckernema, Holopella, Katoptychia, Loxonema, Nodoloxonema, Omospirinae, Perneratia, Stylonema, Tyrsoecus
Type: Loxonema
Ecology: facultatively mobile epifaunal suspension feeder