Balcis, Genus – synonym of Melanella, Genus
Balticardium, Genus – synonym of Parvicardium, Genus
Bankiopsis, Genus – synonym of Bankia, Genus
Bathytellina, Genus – synonym of Tellina, Genus
Beanella, Genus – synonym of Lepidochitona, Genus
Beanella, Genus – synonym of Leptochiton, Genus
Beania, Genus – synonym of Lepidochitona, Genus
Belalora, Genus – synonym of Oenopota, Genus
Belchiton, Genus – synonym of Leptochiton, Genus
Bellardia, Genus – synonym of Comarmondia, Genus
Bellardiella, Genus – synonym of Comarmondia, Genus
Bellostrea, Genus – synonym of Ostrea, Genus
Benzia, Genus – synonym of Pusillina, Genus
Bequania, Genus – synonym of Thyasira, Genus
Bermudaclis, Genus – synonym of Ebala, Genus
Berthellinops, Genus – synonym of Berthella, Genus
Biapholius, Genus – synonym of Hiatella, Genus
Binda, Genus – synonym of Cerithiella, Genus
Bittinella, Genus – synonym of Bittium, Genus
Bittiolum, Genus – synonym of Bittium, Genus
Bittiscalia, Genus – synonym of Bittium, Genus
Bontaea, Genus – synonym of Cochlodesma, Genus
Boreochiton, Genus – synonym of Tonicella, Genus
Boreofusus, Genus – synonym of Troschelia, Genus
Boreotrophon, Genus – synonym of Trophon, Genus
Bostricapulus, Genus – synonym of Crepidula, Genus
Bouvieria, Genus – synonym of Berthella, Genus
Brachystomia, Genus – synonym of Odostomia, Genus
Brocchia, Genus – synonym of Capulus, Genus
Brochus, Genus – synonym of Caecum, Genus
Brocktonia, Genus – synonym of Scaphander, Genus
Brongus, Genus – synonym of Colus, Genus
Buccinopsis, Genus – synonym of Liomesus, Genus
Bucconia, Genus – synonym of Scaphander, Genus
Bullaea, Genus – synonym of Philine, Genus
Bullocardia, Genus – synonym of Scaphander, Genus
Byssoarca, Genus – synonym of Arca, Genus
Byssomya, Genus – synonym of Hiatella, Genus
Byssonia, Genus – synonym of Hiatella, Genus