Few creatures, living or dead, can capture our imaginations like dinosaurs. But those of us who were mesmerised by these creatures as children may find today’s cast strange and unfamiliar. Our well-known mainstays like Tyrannosaurus have been joined by Hollywood-sponsored favourites like Velociraptor, while new names are cropping up at great pace. Clearly, many new species are waiting to join the ranks. The question is: how many?

According to a study from 2006, we have only scratched the surface of dinosaur diversity. With over 1300 new groups left to discover, fossil-hunters should be kept busy for decades to come.

There are many problems with estimating dinosaur numbers. For a start, the fossil record is incomplete and many species are known