AustrosiphonidaeThe Austrosiphonidae are a taxonomic family of large sea snails, often known as whelks.Genera Antarctoneptunea Dell, 1972 Kelletia P. Fischer, 1884 Penion P. Fischer, 1884 Serratifusus Darragh, 1969;Synonyms: Austrosipho Cossmann, 1906: synonym of Penion P. Fischer, 1884 Berylsma Iredale, 1924: synonym of Penion P. Fischer, 1884 Largisipho Iredale, 1929: synonym of Penion P. Fischer, 1884 Verconella Iredale, 1914: synonym of Penion P. Fischer, 1884