2000; Patagonia, Argentina. This is dinosaur country, a land
where the rocks are rich with fossils. For millions of years
this peaceful land has kept a terrible secret and only now are
palaeontologists uncovering the truth. New finds here in South
America are revolutionising our picture of the prehistoric
world. It now seems that in the time of the dinosaurs Patagonia
may have been the scene of the bloodiest battle in the history
of life, one that matched the biggest animal ever to have walked
the Earth against a new dinosaur, the most fearsome killer that
ever evolved. A huge plant-eating dinosaur takes on a massive
carnivore in an ugly pitched battle for survival. This idea of
the two biggest creatures on the planet locked in mortal combat
has proved irresistible for science-fiction writers and movie
makers, but for the scientists who study dinosaurs this was pure
fantasy. They knew that this clash of Titans could never have
happened in real life. That's because in real life the giant,
long-necked herbivore