The ichnological record across the Cretaceous/Tertiary boundary in turbiditic sediments at Uzgruň (Moravia, Czech Republic)

The deep-sea, distal turbiditic deposits at Uzgruň have recorded no significant change of trace fossil diversityand ichnofabrics across the Cretaceous/Tertiary (K/T) boundary interval. There is no evidence of any ecological catas-trophe that can be related to the K/T event. The trace fossil association is rather poor in diversity. This can be related toa general oligotrophy and poor preservation potential. The producers of the discussed trace fossils, dominated by Chon-drites intricatus (Brongniart), Chondrites targionii (Brongniart), Ophiomorpha annulata (Książkiewicz), Ophiomorpharudis (Książkiewicz), Palaeophycus tubularis Hall, Planolites isp., Phycosiphon incertum Fischer-Ooster, Thalassinoidesisp. and Trichichnus isp. lived in a habitat, which had not been influenced by the event.