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

Muszer J., Haydukiewicz J.

Geological Quarterly

2010

Vol. 54, No 3

381-384

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.

Occurrence of the trace fossil Zoophycos from the Upper Viséan Paprotnia Beds of the Bardo Structural Unit (Sudetes, SW Poland)

Muszer J., Haydukiewicz J.

Geologia Sudetica

2009

Vol. 41

57-66

This paper presents evidence for the first confirmed occurrence of the trace fossil Zoophycos from any geological unit of the Polish Sudetes. The Zoophycos specimens were found in the Lower Carboniferous fossil-rich Paprotnia Beds, which are located in the Bardo Structural Unit of the Sudetes. The beds belong to Goniatites crenistria Zone of the Upper Viséan and are thought to represent shallow-water platform deposits. Several dozen Zoophycos specimens were studied in detail, and two morphotypes (termed A1 and A2) of different sizes were distinguished. There was a marked concentration of Zoophycos trace fossils in the lower part of the Paprotnia section, the sediments of which we interpret as probably having been formed between storm wave base and fair-weather wave base within oxygenated water.