Coprolite - Xenacanthus sp.
Xenacanthus was a large shark typical of Permian oceans. It was the apex predator Lozenge shaped black coprolite showing bone fragments. and fish scales.A 'beauty'.
Lower permian, Asselian Stage, Vrchlabi Formation, Rudnik Horizon.
Semily-Jizera River, Krkonose Piedmont Basin, Czech Republic.
Coprolite : 5.3 cm long.
