Abstract
A bromalite from the Middle Triassic (Muschelkalk) of southern Poland, Sadowa Góra Quarry, is herein described and interpreted as a regurgitalite. The fossils occurring within the regurgitalite are angular and have sharp edges. They are represented by common fragments of thin-shelled bivalves as well as rare crinoid and gastropod remains. The composition of the collected inclusion is different from that of the host rock. There are many candidates that could have produced the regurgitalite, including durophagous sharks, marine reptiles, the actinopterygian Colobodus, or nautiloids. Our finding adds to the emerging evidence of durophagous predation in the Triassic sea of Polish part of the Germanic Basin. It is the second record of a regurgitalite from the Muschelkalk of Upper Silesia.
Highlights
Coprolites, or fossil excrement, represent the most commonly described type of fossilized products of digestion
In this paper we report the second regurgitalite from the Muschelkalk of Upper Silesia which indicates the occurrence of durophagous predation in Triassic in the Polish sector of the Germanic Basin
Most fossils occurring within the bromalite are angular, sharp-edged and are represented by fragments of thin-shelled bivalves
Summary
Coprolites, or fossil excrement, represent the most commonly described type of fossilized products of digestion (so-called bromalites). In this paper we report the second regurgitalite (compare Salamon et al 2012) from the Muschelkalk of Upper Silesia which indicates the occurrence of durophagous predation in Triassic in the Polish sector of the Germanic Basin. This is the first such finding from the Sadowa Góra locality during nine years of fieldworks in the quarry
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