Having a close European relative of the American form "Dryosaurus" named led to most of the dryosaurid fossil material of Europe being referred to "Valdosaurus". "Valdosaurus" was seen as not only present in England (the Wessex Formation of the Isle of Wight and the Hastings Beds of West Sussex) but also in Romania (the Cornet Bauxite of Bihor; this species is sometimes referred to as the separate species "Bihariosaurus") and Spain. These rock units were deposited between the Berriasian and Barremian stages, between approximately 145 and 125 million years ago. "V. canaliculatus" would then be known from thigh bones, extensive additional postcranial elements, partial lower jaws, and teeth.