Amnipila pila
Pachychilidae
Ampelisca abdita
Ampeliscidae
Ampelisca agassizi
Ampeliscidae
Ampelisca cristoides
Ampeliscidae
Ampharete americana
Ampharetidae
Amphinaias asperata
Unionidae
Amphinaias pustulosa
Unionidae
Amphiodia trychna
Amphiuridae
Amphioplus coniortodes
Amphiuridae
Amphiura septus
Amphiuridae
Amphiura wurdemanii
Amphiuridae
Amuranodonta kijaensis
Unionidae
Amusium papyraceum
Pectinidae
Amygdalum papyrium
Mytilidae
Anachis floridana
Columbellidae
Anachis lafresnayi
Columbellidae
Anachis obesa
Columbellidae
Anachis sparsa
Columbellidae
Anadara baughmani
Arcidae
Anadara floridana
Arcidae