Abstract
Three types of columella structure have been distinguished in shells of selected snail species (Laciniaria plicata (Drap.), Chondrula tridens (O. F. Mull.), Cepaea vindobonensis (Fer.), Helix lutescens (Rossm.), Viviparus contectus (Millet), V. viviparus (L.), Helicella obvia (Menke) and Planorbarius corneus (L.)); they are correlated with the way of coiling, growth and convexity of whorls.
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