Possible vertebrate coprolites from the Upper Cretaceous (Coniacian) of the Sudetes Mountains (southern Poland)

Possible coprolites from the Upper Cretaceous (Coniacian) of Waliszow Stary in the Sudetes Mountains (southern Poland) are described for the first time. They are relatively small, irregular in outline, and preserved as goethite, limonite, siderite and hematite. Although it is difficult to identify the producer of these coprolites, they were most probably formed by some fish.