A remarkably rare fossil of a prehistoric eagle ray has been discovered at the Hunebedcentrum in Borger, Netherlands. The fossil, a toothplate from the extinct *Myliobatis dixoni*, was found embedded in a 50-million-year-old sandstone block originally sourced from a quarry near Ter Apel. Initially mistaken for a simple rock containing plant fossils, closer examination by a conservator revealed its true nature. This marks the first discovery of a prehistoric eagle ray in the Netherlands, offering insight into the region’s ancient subtropical marine environment. The *Myliobatis dixoni* differed from modern rays, possessing robust toothplates for crushing shellfish. The quarry has previously yielded significant finds, including the oldest fossil ever found in the Netherlands – footprints of a 600-million-year-old velvet worm.