Abstract
The type material of Ichtyocoprus affectatus Makarenko, 1993, originating from the Eocene deposits of the Vizyrka quarry nearthe former town of Ingulets’ (now part of the city of Kryvyi Rih), was studied. This ichnotaxon was originally classified as a fishcoprolite. The results of the study of the specimen figured and described by Dmytro Ye. Makarenko demonstrated that thisfossil is actually a rock cast of a bivalve boring belonging to the ichnogenus Gastrochaenolites Leymerie, 1842. However, it wasnot possible to determine its ichnospecies affiliation due to the insufficient preservation of the material. The unusual surfacepattern of the only specimen of Ichtyocoprus affectatus described by Makarenko is an imprint of a coral substrate, rather thana structure that can occur in the gut of a coprolite producer.
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