25 million years ago in the Oligocene Epoch lived the Indricotheres. Weighing 15 tonnes and standing 7 metres tall, they were the largest land mammals of all time. Show more
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The series following on from Walking with Dinosaurs. begins 49 million years ago. The world is heavily forested and birds rule the planet, preying on small mammals. Show more
36 million years ago mammals ruled the world. It is in the sea, however, that the most monstrous mammals can be found. Show more
This episode follows the progress of a Smilodon called Half Tooth. Smilodon was the largest of all the sabre tooth cats which roamed South America one million years ago. Show more
We travel back 3 million years to Ethiopia, where Australopithecus, one of the first upright apes, lived in danger of being hunted by sabre-toothed Dinofelis. Show more
Last in the series follows a herd of mammoths as they make their way south for winter, running a gauntlet of ice-age hunters including Neanderthal man. Show more