clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora Cepaea nemoralis is the type species of the genus Cepaea. It is used as a model organism in citizen science projects. Cepaea nemoralis is among the largest and because of its polymorphism and bright colours one of the best known snails in Western Europe. The colour of the ...