A new heterobranch gastropod, Chelidonura radwanskii sp. nov., from the middle Miocene of the Korytnica Basin (Holy Cross Mountains, Poland)

摘要

A new species of heterobranch gastropods, the hammerhead Chelidonura radwanskii sp. nov., found in the socalled? Pleurotoma-clays of middle Miocene (Langhian) age in the environs of Korytnica, southern Holy Cross?Mountains, Poland, is described. It is the first fossil representative of Chelidonura A. Adams, 1850. This tiny?gastropod is named in honour of the late Professor Andrzej Radwański.