So the first large mammoth that appears on the scene is meridionalis, which was standing four meters tall weighing about 10 tons, and was a woodland-adapted species and spread from Western Europe clear across Central Asia, across the Bering land bridge and into parts of North America. And then, again, as climate changed as it always does, and new habitats opened up, we had the arrival of a steppe-adapted species called trogontherii in Central Asia pushing meridionalis out into Western Europe. And the open grassland savannas of North America opened up, leading to the Columbian mammoth, a large, hairless species in North America. And it was really only about 500,000 years later that we had the arrival of the woolly, the one that we all know and love so much, spreading from an East Beringian point of origin across Central Asia, again pushing the trogontherii out through Central Europe, and over hundreds of thousands of years migrating back and forth across the Bering land bridge during times of glacial peaks and coming into direct contact with the Columbian relatives living in the south, and there they survive over hundreds of thousands of years during traumatic climatic shifts. So there's a highly plastic animal dealing with great transitions in temperature and environment, and doing very, very well. And there they survive on the mainland until about 10,000 years ago, and actually, surprisingly, on the small islands off of Siberia and Alaska until about 3,000 years ago. So Egyptians are building pyramids and woollies are still living on islands.