Classification
Biota [regio]Animalia [regnum]
Mollusca [phylum]
Gastropoda [classis]
Littorinimorpha [ordo]
Ordo Littorinimorpha contains the following taxa:
Calyptraeidae [familia]
Cassidae [familia]
Charoniidae [familia]
Cypraeidae [familia]
Ficidae [familia]
Strombidae [familia]
Tonnidae [familia]
Vermetidae [familia]
Xenophoridae [familia]