Trace fossils and depositional environments of the middle Turonian sand stones in the Upper Nysa Klodzka Graben (Sudetes, Poland) revis

We provide the first reports of some rare trace fos sils from the middle Turonian (Upper Cretaceous) of the Sudety Mountains (SW Poland, Upper Nysa Klodzka Graben, Dlugopole Gorne Quarry). These include burrows ?Ancorichnus isp., Asterosoma cf. ludwigae Schlirf, 2000, Asterosoma isp., cf. Phycodes isp., Dactyloidites ottoi (Geinitz, 1849), Funalichnus strangulatus (Fritsch, 188l), Phycodes cf. palmatus (Hall, 1852), cf. Phycodes isp., Phycosiphon incertum Fischer-Ooster, 1858, ?Phycosiphon isp., Planolites beverleyensis (Billings, 1862) and borings Entobia isp. Some body fossils, bivalves ?Brachidontes sp., Lima canalifera Goldfuss, 1816, Pinna (Pinna) cretacea ( Schlotheim, 181l) and Rhynchostreon suborbiculatum (Lamarck, 1801) are also reported. The trace fos sil assemblage in dicates a distal Skolithos ichnofacies and proximal Cruziana ichnofacies, which characterize a proximal and distal lower shoreface setting respectively. Sedimentation of the middle Turonian sandstones took place in a shallow epicontinental sea of normal salin ity and a soft substrate, which was well-ox ygenated under low-moderate hydrodynamic conditions. The presence of the oyster Rhynchostreon in the deposits studied suggests the in fluence of a warm Tethys Ocean.