The Patellogastropoda, common name true limpets and historically called the Docoglossa, are members of a major phylogenetic group of marine gastropods, treated by experts either as a clade or as a tax
Eoacmaea
…Eoacmaea is a genus of sea snails or true limpets, marine gastropod mollusks in the subclass Patellogastropoda, the true limpets. Eoacmaea is the only genus in the family Eoacmaeidae, belonging to the superfamily Lottioidea…
Limplets various examples
Ventral view of Patella rustica showing its foot and head with tentacles.