The ichnofossil Helicotaphrichnus commensalis in the Korytnica basn (Middle. Miocene; Holy Cross (Mountains, Central Poland)

J. Philip Kern

Abstract


The ichnofossil Helicotaphrichnus commensalis is a morphologically distinct tube that is identical with modern tubes constructed by polychaetes in gastropod shells inhabited by hermit crabs. Its abundant occurrence in the Korytnica Clays (Middle Miocene; Holy Cross Mountains, Central Poland) extends both the stratigraphic range and the geographic distribution of this ichnospecies.


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