The word "dinosaur" was coined by Victorian naturalist Sir Richard Owen in 1841. Derived from the Greek, it means "terrible lizard". The modern meaning is, of course, "humongous slavering monster that tramples the getaway car, eats the supporting actor and fills the IMAX screen from top to bottom."
As well as giving dinosaurs their name, Owen was one of the first to recognize their entertainment potential. In 1852, following London's Great Exhibition, he oversaw the creation of 33 life-size concrete dinosaur sculptures. After the giant models had been artistically placed in parkland surrounding Crystal Palace, Owen hosted a flamboyant dinner party inside the hollow mold that had been used to make the Iguanodon.
After that, dinosaurs swiftly rampaged through popular culture, including early cinema. In 1925, Willis O'Brien – one of the earliest visual effects practitioners – chose them as a subject for his revolutionary stop motion animation techniques in The Lost World, a film which took Owen's Victorian concept of the dinosaur tableau and made it live and breathe.
For nearly seventy years, stop motion remained the technique of choice for bringing extinct creatures to life. In 1953, The Beast from 20,000 Fathoms saw Ray Harryhausen using O'Brien's methods to resurrect a long-dormant Rhedosaurus – a fictional dinosaur awoken from its slumber by an A-bomb test.
More Harryhausen dinosaurs followed in 1966, when One Million Years B.C. showcased his Dynamation process in glorious Technicolor. Three years later, he repeated the trick yet again with The Valley of Gwangi. Impressive though Gwangi's dinosaurs were, the film ultimately lacked the box office bite of its prehistoric predecessor (perhaps because it swapped Raquel Welch in a leather bikini for a bunch of cowboys).