First Paleozoic Zoophycos trace fossils from the Sudetes (the Bardo Unit)

Abstract

The trace fossil Zoophycos has been first time recognized in the Sudetes within the lower Carboniferous (upper Visean, crenistria Zone) of the Paprotnia Beds in the Bardo Unit. A distinct concentration of Zoophycos occurs in the lower part of the Paprotnia profile, in mudstones interbedded with bentonites, which were most likely deposited between storm wave base and fair weather wave base, in oxygenated water