Archaeogastropoda

Archaeogastropoda includes 11 children:

• Calliostomatidae Thiele 1924
• Cocculinidae Dall 1882
• Fissurellidae J. Fleming 1822 (keyhole limpets)
• Haliotididae
• Nacellidae Thiele 1891
• Platyteichum
• Scissurellidae Gray 1847 (little slit snails)
• Skeneidae W. Clark 1851
• Umbonium Link 1807
• Venustas R. S. Allan 1926
• Zetela Finlay 1926
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