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Order Archaeogastropoda

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Order Archaeogastropoda (4+ superfamilies, 10+ families, 46+ genera)
True Limpets

• Superfamily Patellacea (3+ families, 11+ genera)
  • Family Acmaeidae (4+ genera)
    • Genus Acmaea
    • Genus Colisella
    • Genus Lottia
    • Genus Notoacmaea
  • Family Lepetidae (4+ genera)
    • Genus Iothia
    • Genus Lepeta
    • Genus Neomphalus
    • Genus Propilidium
  • Family Patellidae (3+ genera)
    • Genus Cellana
    • Genus Nacella
    • Genus Patella
• Superfamily Pleurotomariacea (1+ families, 3+ genera)
  • Family Pleurotomariidae (3+ genera)
    • Genus Perotrochus
    • Genus Entemnotrochus
    • Genus Pleurotomaria
• Superfamily Trochacea (3+ families, 25+ genera)
  • Family Stomatellidae (5+ genera)
    • Genus Broderipia
    • Genus Gena
    • Genus Stomatella
    • Genus Stomatia
    • Genus Synaptocochlea
  • Family Trochidae (13+ genera)
    • Genus Angaria
    • Genus Clanculus
    • Genus Tectus
    • Genus Trochus
    • Genus Astele
    • Genus Calliostoma
    • Genus Photinula
    • Genus Bankivia
    • Genus Diloma
    • Genus Monodonta
    • Genus Tegula
    • Genus Bathybembix
    • Genus Lischkeia
  • Family Turbinidae (7+ genera)
    • Genus Astraea
    • Genus Bolma
    • Genus Cookia
    • Genus Guildfordia
    • Genus Homalopoma
    • Genus Leptothyra
    • Genus Turbo
• Superfamily Cerithiacea (3+ families, 7+ genera)
  • Family Turritellidae (1+ genera)
    • Genus Vemicularia
  • Family Siliquariidae (1+ genera)
    • Genus Siliquaria
  • Family Vermetidae (5+ genera)
    • Genus Aletes
    • Genus Bivonia
    • Genus Petaloconchus
    • Genus Sepulorbis
    • Genus Trypsycha

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