How Did the Paleogene Period Begin

Paleogene Period, also spelled Palaeogene Period, oldest of the three stratigraphic divisions of the Cenozoic Era spanning the interval between 66 million and 23 million years ago.

When did the Paleogene period start and end?

Paleogene Period, also spelled Palaeogene Period, oldest of the three stratigraphic divisions of the Cenozoic Era spanning the interval between 66 million and 23 million years ago.

Why was the Paleogene Period tropical?

During the Paleogene period, most of the Earth’s climate was tropical. The Neogene period saw a drastic cooling, which continued into the Pleistocene epoch of the Quaternary period. As for the changing landscape, the continents drifted apart during the Paleogene period, creating vast stretches of oceans.