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A recent discovery in Australia has shown fossil microorganisms dating back 3.4 billion years.
Early humans first appeared in Africa. The oldest known fossils of early human ancestors, such as Ardipithecus and Australopithecus, have been found in East Africa, indicating that Africa is the continent where early humans originated.
Some of the oldest rocks found in North America have been on the Canadian Shield.
Africa
a dinosaurs tooth
Africa
The oldest rocks are typically found on land, as they have not been eroded away by oceanic processes. The oldest known rocks on Earth are found in Western Australia and are estimated to be around 4 billion years old.
africa
The oldest mountains on the continent are the Appalachian Mountains, located in the eastern United States. These mountains were formed over 480 million years ago and have been shaped by millions of years of erosion and geological processes.