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Frýda, J.; Heidelberger, D. (2003). Systematic position of Cyrtoneritimorpha within the class Gastropoda with description of two new genera from Siluro-Devonian strata of Central Europe. Bulletin of the Czech Geological Survey. 78(1): 35-39.
Frýda, J.; Heidelberger, D. (2003). Systematic position of Cyrtoneritimorpha within the class Gastropoda with description of two new genera from Siluro-Devonian strata of Central Europe. Bulletin of the Czech Geological Survey. 78(1): 35-39.