
Describes the Eocene-Oligocene extinctions, an important turning-point in Earth history approximately 40 million years ago, when the first signs of Antarctic glaciation appeared. The text relates how, during a period of global cooling, the planet's climate and vegetation changed...

Describes the Eocene-Oligocene extinctions, an important turning-point in Earth history approximately 40 million years ago, when the first signs of Antarctic glaciation appeared. The text relates how, during a period of global cooling, the planet's climate and vegetation changed...