The Kropivnik Fucoid Marls of the Polish Outer Carpathians contain numerous bioturbation structures, and comprise thin-bedded sandstones, hard and soft marlstones and muddy to clayey, mainly turbiditic shales. Comparison of three sections elucidated the stratigraphicand sedimentological controls on the distribution of the bioturbation structures, which are most common on the soles of sandstone beds, and within and on the tops of beds of hard marlstone overlain by shale. Most of the bioturbation structures are taxonomically undeterminable. Nevertheless, twenty seven ichnospecies, including one new ichnospecies (Taenidium recurvum), and seven forms of trace fossilsof unknown taxonomic affinity were recognised. Most ichnotaxa were observed as individual specimens. Irregular structures apparentlyformed by the squashing of burrows filled with fluidised fill, called here turbidichnia, are quite common in some marlstone beds in thelower part of the succession. Planolites beverleyensisand Halopoa imbricataare the most frequent trace fossils on the lower surfaces ofsandstone beds. Chondrites intricatus, Planolites beverleyensis and Thalassinoides suevicusrepresent the most common taxa in hardmarlstones. Endoreliefs of Scolicia isp. are quite frequent in the top parts of marlstone beds in some parts of the succession. Other ichnotaxa were found either rarely or as single specimens only. The burrowing depth, reaching 15 cm below the tops of normally-graded rhythmic units, together with the relatively rich trace fossil assemblage and common occurrence of Planolites and Thalassinoides, is interpreted as indicating fully oxic conditions at the bottom of the sedimentary basin.