[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Family Acmaeidae Forbes, 1850 - American limpets
         1 Genus Acmaea Eschscholtz, 1833
         2 Genus Pectinodonta Dall, 1882