Abderospira, Genus – synonym of Roxania, Genus
Acantheledone, Genus – synonym of Eledone, Genus
Acanthochila, Genus – synonym of Cadlina, Genus
Acanthopsole, Genus – synonym of Facelina, Genus
Acera, Genus – synonym of Akera, Genus
Aceras, Genus – synonym of Akera, Genus
Aciculina, Genus – synonym of Nassarius, Genus
Acinopsis, Genus – synonym of Alvania, Genus
Acinulus, Genus – synonym of Alvania, Genus
Aciona, Genus – synonym of Epitonium, Genus
Acrololigo, Genus – synonym of Alloteuthis, Genus
Acruroteuthis, Genus – synonym of Alloteuthis, Genus
Actaeon, Genus – synonym of Acteon, Genus
Actaeon, Genus – synonym of Elysia, Genus
Actaeonia, Genus – synonym of Limapontia, Genus
Actinoleuca, Genus – synonym of Acmaea, Genus
Actonia, Genus – synonym of Alvania, Genus
Adasius, Genus – synonym of Solecurtus, Genus
Adipicola, Genus – synonym of Idas, Genus
Adriaria, Genus – synonym of Gibbula, Genus
Adriella, Genus – synonym of Lepidochitona, Genus
Aequipectus, Genus – synonym of Aequipecten, Genus
Aequivalvis, Genus – synonym of Aequipecten, Genus
Agina, Genus – synonym of Hiatella, Genus
Alcidia, Genus – synonym of Alvania, Genus
Alcidiella, Genus – synonym of Alvania, Genus
Alectrionidae, Familia – synonym of Nassariidae, Familia
Alexia, Genus – synonym of Ovatella, Genus
Allenineaera, Genus – synonym of Cuspidaria, Genus
Aloidis, Genus – synonym of Corbula, Genus
Altenaeum, Genus – synonym of Mysella, Genus
Alvaniella, Genus – synonym of Alvania, Genus
Alvanolira, Genus – synonym of Alvania, Genus
Alvinia, Genus – synonym of Alvania, Genus
Ammonicerina, Genus – synonym of Ammonicera, Genus
Amoebea, Genus – synonym of Aequipecten, Genus
Amoura, Genus – synonym of Chrysallida, Genus
Amphiperatidae, Familia – synonym of Ovulidae, Familia
Amphispyra, Genus – synonym of Diaphana, Genus
Amphitaea, Genus – synonym of Dosinia, Genus
Amphitrite, Genus – synonym of Dendronotus, Genus
Amphitritidea, Genus – synonym of Dendronotus, Genus
Amphorina, Genus – synonym of Eubranchus, Genus
Ampullotrochus, Genus – synonym of Calliostoma, Genus
Amycla, Genus – synonym of Nassarius, Genus
Amyclina, Genus – synonym of Nassarius, Genus
Amygdala, Genus – synonym of Tapes, Genus
Anademaria, Genus – synonym of Asperspina, Genus
Anatasia, Genus – synonym of Rissoa, Genus
Anchomasa, Genus – synonym of Barnea, Genus
Anchosoma, Genus – synonym of Barnea, Genus
Andrewiella, Genus – synonym of Alvania, Genus
Andrewiella, Genus – synonym of Manzonia, Genus
Anellum, Genus – synonym of Caecum, Genus
Angulus, Genus – synonym of Tellina, Genus
Angustostrea, Genus – synonym of Crassostrea, Genus
Anisocycla, Genus – synonym of Ebala, Genus
Anomalocranchia, Genus – synonym of Teuthowenia, Genus
Ansola, Genus – synonym of Barleeia, Genus
Ansolidae, Familia – synonym of Barleeidae, Familia
Antalis, Genus – synonym of Dentalium, Genus
Antiopa, Genus – synonym of Janolus, Genus
Antiopella, Genus – synonym of Janolus, Genus
Apanthausa, Genus – synonym of Rissoa, Genus
Aperiploma, Genus – synonym of Cochlodesma, Genus
Apicularia, Genus – synonym of Rissoa, Genus
Apiculum, Genus – synonym of Gibbula, Genus
Aplacophora:, Classis – synonym of Caudofoveata, Classis
Aplacophora:, Classis – synonym of Solenogastres, Classis
Aplysiomorpha, Ordo – synonym of Anaspidea, Ordo
Aplysiopterus, Genus – synonym of Elysia, Genus
Arcaria, Genus – synonym of Arca, Genus
Archicardium, Genus – synonym of Acanthocardia, Genus
Arcopella, Genus – synonym of Arcopagia, Genus
Arcopta, Genus – synonym of Arca, Genus
Arctoa, Genus – synonym of Dosinia, Genus
Arctoe, Genus – synonym of Dosinia, Genus
Arctoscala, Genus – synonym of Epitonium, Genus
Arcuatula, Genus – synonym of Modiolus, Genus
Arcula, Genus – synonym of Arca, Genus
Arcularia, Genus – synonym of Nassarius, Genus
Arculariidae, Familia – synonym of Nassariidae, Familia
Arculia, Genus – synonym of Nassarius, Genus
Arenaria, Genus – synonym of Scrobicularia, Genus
Arenolyonsia, Genus – synonym of Lyonsia, Genus
Argoderma, Genus – synonym of Pecten, Genus
Argodesma, Genus – synonym of Pecten, Genus
Argus, Genus – synonym of Pecten, Genus
Ariadna, Genus – synonym of Trichotropis, Genus
Ariadnaria, Genus – synonym of Trichotropis, Genus
Armequipecten, Genus – synonym of Aequipecten, Genus
Arrhoges, Genus – synonym of Aporrhais, Genus
Arsenia, Genus – synonym of Alvania, Genus
Artemis, Genus – synonym of Dosinia, Genus
Arthemiderma, Genus – synonym of Dosinia, Genus
Arthemis, Genus – synonym of Dosinia, Genus
Artusius, Genus – synonym of Pharus, Genus
Asa, Genus – synonym of Dosinia, Genus
Asbjoernsenia, Genus – synonym of Tellina, Genus
Ascoglossa, Ordo – synonym of Sacoglossa, Ordo
Assula, Genus – synonym of Scaphander, Genus
Astartea, Genus – synonym of Astarte, Genus
Asteracmea, Genus – synonym of Acmaea, Genus
Atalacmaea, Genus – synonym of Tectura, Genus
Atractus, Genus – synonym of Colus, Genus
Aulacofusus, Genus – synonym of Neptunea, Genus
Aulacophora, Genus – synonym of Cuspidaria, Genus
Auriconoba, Genus – synonym of Rissoa, Genus
Auriculina, Genus – synonym of Ondina, Genus
Auristomia, Genus – synonym of Odostomia, Genus
Austronassaria, Genus – synonym of Nassarius, Genus
Austronucula, Genus – synonym of Nuculoma, Genus
Austroteredo, Genus – synonym of Teredo, Genus
Autonoe, Genus – synonym of Lasaea, Genus
Awuka, Genus – synonym of Jorunna, Genus
Axinaea, Genus – synonym of Glycymeris, Genus
Axinulus, Genus – synonym of Thyasira, Genus