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1,156 littorinimorpha species
Amnicola dalli
Tryonia rowlandsi
Nucleolaria nucleus
Colligyrus depressus
Pyrgulopsis perturbata
Pyrgulopsis owensensis
Tryonia cheatumi
Atlanta helicinoidea
Atlanta brunnea
Pyrgulopsis gibba
Amphithalamus vallei
Amphithalamus rauli
Atlanta inclinata
Atlanta lesueurii
Atlanta peronii
Protatlanta souleyeti
Caecum bipartitum
Caecum brasilicum
Caecum californicum
Caecum carolinianum
Caecum circumvolutum
Caecum clava
Caecum cycloferum
Caecum floridanum
Pyrgulopsis eremica
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