Abstract

A cliff exposure of the Eocene Lillebaelt Clay Formation, on the Rosnaes peninsula of Zealand, Denmark, has yielded a diverse trace-fossil assemblage. The trace fossils are described formally for the first time and assigned to Phymatoderma melvillensis , unnamed clusters of small burrows, Ophiomorpha nodosa , Spongeliomorpha isp., Dreginozoum beckumensis , Bichordites isp., Chondrites isp., Atollites zitteli ? and ? Rhizocorallium isp. The preservation of the trace fossils is strongly related to early diagenetic enhancement. The trace-fossil assemblage is dominated by a combination of dwelling and feeding burrows. The bioturbation took place in very clean clay of a shelf setting far offshore. The trace-fossil assemblage is indicative of the distal Cruziana ichnofacies.

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