The 147-million-year-old fossil is split across two slabs of rock - what experts call ... deliberate impressions made in some kind of limestone cement that had been added on top of a true dinosaur ...

PhD student Amelia Penny spotted its sharp-toothed jaw in a layer of ancient limestone on Skye's ... had to extract the rock slab entombing the fossil - a painstaking process and noisy process ...

Some mystery persists; they have yet to determine where exactly in Europe the black limestone slab of the tombstone ...