†Leptoptygma Knight 1936 (snail)
Gastropoda - Murchisoniina - Soleniscidae
Full reference: J. B. Knight. 1936. Notes on Paleozoic Gastropoda. Journal of Paleontology 10(6):520-534
Parent taxon: Soleniscidae according to P. J. Wagner 2011
Sister taxa: Alaskacirrus, Bensbergia, Cylindritopsis, Decorochilina, Havlicekiela, Ianthinopsis, Ischnoptygminae, Labridens, Macrochilininae, Nanochilina, Palaeocarboninia, Procerithiopsis, Prokopiconchinae, Scalitina, Soleniscinae, Strobeus
Subtaxa: Leptoptygma fountainensis, Leptoptygma golconda, Leptoptygma laetus, Leptoptygma newtonensis, Leptoptygma simplex, Leptoptygma subtilistriatum, Leptoptygma virgatum
Ecology: epifaunal carnivore