Missing

The big problem with Deinocheirus, which has given rise to the great mystery surrounding it, is that so far palaeontologists have only found a few bits of backbone and its arms! But these pieces are impressive, to say the least. Each arm is about 2.5 metres (8 feet) long, ending in claws measuring roughly 25 centimetres (10 inches). Obviously, claws like that aren't just for show and make fearsome weapons, either for catching prey or for self-defence.

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to say /t DlE-no-KlRE-us Penod u,e Cretaceous

Height Not known meat

JURASSIC

Guess work

With so few remains available, palaeontologists can't really be sure what Deinocheirus looks like or what it can do. Some argue that it must be quite ostrich-like in build and probably one of the fastest predators around. Others point out the similarity between the claws of Deinocheirus and those of the modern-day sloth. Could it be that this dinosaur is an excellent tree-climber and enjoys a dangle from the branches? As with all dinosaurs, the more remains we find, the more we'll know so, until we get more evidence, an educated guess is the best we can do.

Deinonychus

Deinonychus is nowhere near the biggest carnivore on the planet, but this Cretaceous predator is one of the most fearsome. An agile and intelligent hunter, it is one scary dinosaur.

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