(Archaeogastropoda) (Archaeogastropoda) is a biological order of the phylum Mollusca (Molluscs) and class Gastropoda (Gastropods).
Haliotidae
Addisoniidae
Bathyphytophilidae
Bathysciadiidae
Calliostomatidae
Ceresidae
Cloristellidae
Cocculinellidae
Cocculinidae
Cyclostrematidae
Fissurellidae
Gorgoleptidae
Hydrocenidae
Lepetellidae
Lepetodrilidae
Nacellidae
Neomphalidae
Neritopsidae
Orbitestellidae
Osteopeltidae
Patellidae
Phasianellidae
Pleurotomariidae
Proserpinidae
Pseudococculinidae
Pyropeltidae
Scissurellidae
Seguenziidae
Septariidae
Skeneidae
Stomatellidae
Titiscaniidae
Tricoliidae
Trochaclididae
Trochidae
Turbinidae
Acochlidioidea
Anaspidea
Archaeogastropoda
Archaeopulmonata
Architaenioglossa
Basommatophora
Cephalaspidea
Entomotaeniata
Gymnosomata
Heterostropha
Mesogastropoda
Neogastropoda
Neotaenioglossa
Neritopsina
Notaspidea
Nudibranchia
Patellogastropoda
Rhodopemorpha
Sacoglossa
Soleolifera
Stylommatophora
Systellommatophora
Thecosomata