Dinosaurs became extinct before the Rockies or the Alps were formed.
After roaming the Earth in the Mesozoic Era (between 230 million and 65 million years ago), dinosaurs remained undiscovered until 1822 when Gideon Mantell found a few teeth and bones in Sussex.
He called them 'Iguanodon' ('iguana tooth'), but, soon after, a similar discovery was made in Oxford by Rev. William Buckland, who called his teeth and bones 'Megalosaurus' ('great lizard').
The linguistic issue was finally resolved in 1841, when Sir Richard Owen suggested the word 'dinosaur'.
Despite all this, the word 'dinosaur' occurs only twice in the entire Dictionary of National Biography.
OTHER USEFUL DATES:
220 million BC: first mammals
70 million BC: first Tyrannosaurus
1 million BC: first homo erectus
1938: fishermen net a coelacanth, thought to have been extinct for 70 million years
1947: birth of Steven Spielberg, director of Jurassic Park
1. The Stegosaurus ('plated lizard'), whose brain weighed in at 2.5oz, or half of one-thousandth of one per cent of its total body weight. This is a record for a small central processing unit running a large piece of hardware.
2. William Buckland (1784-1856) who, quite apart from his pioneering work as a dinosaur hunter, once stole Ben Jonson's heel bone from Westminster Abbey. His day job was Dean of Westminster Cathedral. 3. Sir Richard Owen (1804-92) who, apart from inventing the term 'dinosaur', was renowned for his clinical dissections of the beaver, suricate, acouchy, Tibetan bear, gannet, crocodile, armadillo, seal, kangaroo, tapir, toucan, flamingo, hyrax, hornbill, cheetah, capybara, pelican, kinkajou, wombat, giraffe, dugong, apteryx, wart-hog, walrus and great ant-eater.
Although all the other dinosaurs died out suddenly around 65 million BC, the brontosaurus was only officially expunged from the natural history records this century, on the grounds that the Brontosaurus ('thunder lizard'), discovered and named by O.C. Marsh in 1879, was in fact only a grown-up Apatosaurus ('deceptive lizard'), which he had discovered and named two years earlier.
The problem was partly caused by his sticking the wrong head on to his Apatosaurus bones.
The error had been identified in 1903, after which, according to the rules of the naming game, 'Apatosaurus', as the earlier term, took official precedence.
In 1970, the US Post Office was forced to apologise for calling an Apatosaurus a Brontosaurus on a series of dinosaur stamps.
In 1993 it was established that the sound made by a Tyrannosaurus probably resembled, in the words of one scientist, 'The sound made by a human stomach after a bad night in a cheap restaurant.'
No land animal bigger than a Seismosaurus (100 tonnes and 110ft) can exist, because its legs would need to be so thick to hold it up, it could never move.
After cloning the dinosaurs from the blood specimens in the stomachs of mesozoic mosquitoes, how did the architects of Jurassic Park manage to grow the trees for their environment so quickly?
That prehistoric tree the heroes hid up when the dinosaur sneezed on them must have been at least 200 years old to get that big.
On 14 October 1996, Australia's only known Stegosaurus footprint was reported to have been stolen from Aborigine land north of Broome, Western Australia.