geologic 01 Pre-Cambrian ~ 650 mya 02 Triassic ~ 270 mya 03 Pangea ~ 04 Opening Seas ~ 05 8K BCE 10,000 years ago 06 African Seas 07 The Americas 08 Split 09 South America 60 to 1 MYA 10 Andes Rockies 11 Pleistocene ~ 1.6MYA 12 Holocene ~ 10,000 years ago.