Family Prionoceratidae Hyatt, 1884
[nom. correct. Bogoslovsky (1971: 180), pro Prionocerae Hyatt, 1884]
Family of the superfamily Prionoceratoidea with the sutural formula E A L U I or (E 1 E m E 1) A L U I in some advanced forms; adventive lobe deep, V-shaped or lanceolate and pointed, only rarely blunt; the lateral lobe has a position on the umbilical seam. Conch in the juvenile stage usually subinvolute, in some lineages subevolute or evolute; adult stage usually involute, but subinvolute in some genera. Shell ornament with fine to coarse growth lines, mostly without ribs.
Prionoceratinae Hyatt, 1884; Imitoceratinae Ruzhencev, 1950; Karagandoceratinae Librovitch, 1957; Voehringeritinae Bartzsch & Weyer, 1988; Acutimitoceratinae Korn, 1994; Balviinae Korn in Korn & Klug, 2002.