=Aneuacanthus) Acrocephalaspina Acrocephalaspis Acrocephalella Acrocephalina Acrocephalinella Acrocephalites (=Acantholenus) Acrocephalops Acrodirotes Acropyge Actinopeltis Acuticryphops Acutimetopus
Ad Adastocephalum Adelogonus
Ae Aedotes Aegrotocatellus Aegunaspis Aethedionide Aethia Aethochuangia
Af Afghancephalites Afghanocare Afrops
Ag Agasella Agaso Agelagma (?=Paradistazeris) Agerina (=Otarionellina; =Otarionella) Agnostardis Agnostogonus Agnostotes Agnostus (=Battus; =Acutatagnostus) Agraulos (=Arion; =Arionius; =Arionides; =Arionellus; =Agrauloides) Aguaraya Aguilarella Agyrenella
Ai Aiaiaspis Aidarella Aikhaliella Ainasuella Aistagnostus
Aj Ajacicrepida Ajrikina
Ak Akantharges Akbashichia Aksayaspis Aksuaspis Aktugaiella
Al Alacephalus Alanisia Alaskadiscus Alaskalethe Alataupleura Alataurus Albansia Albertella Albertellina Albertelloides (=Chuchiaspis) Alberticoryphe Alborsella Alceste Alcymene Aldanaspis Aldonaia Alekcinella Aligerites Allobodochus Alloillaenus Alloleiostegium Allolichas Alokistocare (=Pseudoalokistocare) Alokistocarella Alokistocaropsis Altaepeltis Altaesajania Altaiaspis Altajaspis Altikolia Altiocculus Altiplanelaspis Altitudella Alueva Alwynulus