Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758 Superfamily †Yochelcionelloidea Runnegar & Jell, 1976, incertae sedis Family †Stenothecidae Runnegar & Jell, 1980 1 Subfamily †Stenothecinae Runnegar & Jell, 1980 2 Subfamily †Watsonellinae Parkhaev, 2001