Ichnological characteristics of Late Cretaceous hemipelagic and pelagic sediments in a submarine high around the OAE-2 event: A case from the Rybie section, Polish Carpathians

► Deep-sea Cenomanian-Turonian sediments are strongly bioturbated. ► Trace fossil diversity and abundance fluctuate in the Bonarelli Level at Rybie. ► The fluctuations correspond to changes of benthic foraminifers. ► The data point to trophic level and oxygenation of pore water changes.