Few dinosaur fossils in Ireland

This 3 December 2018 video says about itself:

Can you find dinosaur fossils in Ireland?

Dinosaurs existed for over 170 million years and lived all over the Earth. You might expect to find fossil evidence of them everywhere you look, but only two dinosaur fossils have been found in Ireland.

Dr Mike Simms, Senior Curator of Natural History at National Museums Northern Ireland, explains why.