Elasmobranchii from the Atuatuca Formation (Oligocene) in Belgium

Some recent finds of elasmobranch teeth are described from the Atuatuca Formation (Oligocene) in the neighbourhood of Tongeren in Belgium. Three sharks species, Odontaspis cuspidata, Rhizoprionodon secundus and ‘Galeorhinus’ latus, and four types of Dasyatis are described for the first time from this formation. The formation was deposited in an euryhaline environment, comparable with a lagoon or coastal lake. The occurrence of elasmobranch teeth in these non-marine deposits is discussed and related to the sedimentary history of this formation. According to the elasmobranch faunas a Lattorfian age for the Atuatuca Formation seems acceptable at this moment.