Peel, J. S.; Horný, R. J. (1996). Sinistral hyperstrophic coiling in a Devonian gastropod from Bohemia with an in situ operculum. Palaeontology. 39: 709-718.
221501
Peel, J. S.; Horný, R. J.
1996
Sinistral hyperstrophic coiling in a Devonian gastropod from Bohemia with an in situ operculum