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Genus Lamtoquadrula

Shell is retort-shaped with bending neck in lateral view; circular cross-section; covered by endogenously secreted square or rectangular plates placed in regular rows. Aperture is circular with a thin transparent organic lip, only visible with phase or interference contrasts. Ecology: soils. Monospecific. Type species: Lamtoquadrula deflandrei Bonnet, 1974