Trace fossils from Lower Miocene (Ottnangian) molasse deposits of Upper Austria

Lower Miocene siliciclastic sediments of the Vöckla Schichten and Atzbacher Sande, Austria, contain a shallow-water trace-fossil assemblage of the Cruziana ichnofacies including Skolitbos isp., Planolites ? beverleyensis, Ophiomorpha annulata, O. nodosa, Rosselia socialis, Cylindrichnus concentricus, Scolicia isp., and Bichordites rnonastiriensis. The ichnogenus Rosselia and the ichnospecies Rosselia socialis are revised. Analysis of Scolicia isp. and B. monastiriensis provides new information about their morphology and ichnotaxonomy.