Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)
Elasmobranchii of the Cenomanian/Turonian boundary interval in the Prokop opencast mine at Březina near Moravská Třebová
AbstractFinds of fossil sharks and rays from the Prokop opencast mine in Březina near Moravská Třebová are described in this report. Elasmobranchii teeth were found in the Upper Cretaceous glauconitic sands and sandstones of the Peruc Member of the Peruc-Korycany Formation (Upper Cenomanian, Orlice-Žďár lithofacies of the Bohemian Cretaceous Basin), only a smaller part of the material comes from the overlying fine-grained spongilitic sandstones of the Bílá Hora Formation (Lower Turonian). In the collection of 155 teeth the following taxa were determined: Hybodus sp., Acrodus giedryci, Ptychodus polygyrus, Ptychodus cf. decurrens, Ptychodus cf. latissimus, Ptychodus anonymus, Ptychodus mammillaris, Ptychodus occidentalis, Hexanchus sp., Heterodontus sp., Scapanorhynchus raphiodon, Cretodus crassidens, Cretodus semiplicatus, Cretoxyrhina mantelli, Cretolamna appendiculata, Cretolamna sp., Paranomotodon angustidens, Squalicorax falcatus, Ptychotrygon sp. Three teeth have a pathological anomaly of the crown. Furthermore, four vertebral centra and one coprolite were found.