Dinosaurs evolved partway through the Triassic period of the Mesozoic era, around 230 Ma (million years ago).
At that time, the earth had one supercontinental landmass, called Pangaea, of which Europe was a part.
By the start of the Jurassic period, some 30 million years later, the supercontinent began to split into Laurasia and Gondwana.
Europe is relatively rich in fossils from the Jurassic-Cretaceous boundary, and much of what is known about European dinosaurs dates from this time.
During the Maastrichtian the end of the Cretaceous dinosaurs were dominating western and Central Europe as the Tremp Formation in Spain dates back to that age.