Frýda J. (1999). Secondary shell deposits in a new plectonotid gastropod genus (Bellerophontoidea, Mollusca) from the Early Devonian of Bohemia. Journal of the Czech Geological Society. 44(3/4): 309-315.
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Frýda J.
1999
Secondary shell deposits in a new plectonotid gastropod genus (Bellerophontoidea, Mollusca) from the Early Devonian of Bohemia