Sites with dinosaur eggs are infrequent and the majority that have been discovered date from the Upper Cretaceous. In Europe in prehistoric times there were few areas that had emerged from the sea that were suitable as
nests.
The dinosaur eggs that were laid inland, on the surface, were destroyed either by the weather or by predators.
On the other hand, eggs that were laid in sand or in the mud-flats on the edge of rivers, lakes or marshes, were on occasion quickly buried and subsequently fossilised.
Museum
