Figures
Figure 1: Paleogeographic reconstructions of Earth for the past
70 million years. a) Positions of the continents approximately 70
million years ago during the Upper Cretaceous before West Africa had
merged with the main continent and when India was still an island. b)
Continents approximately 50 million years ago during the Palaeocene
after the African continent formed but before the Americas were
connected and shortly before India merged with Asia or the polar caps
formed. c) Geography of Earth during the Eocene, 30 million years ago,
by which time most continents had formed but central America did not
connect the North and South yet and much of Europe was still under
water. d) Modern day geography of Earth in the current Holocene. (image
created in BioRender.com)