The Plate Tectonics, Earthquakes, Tsunami and Global Warming Relation

Late Triassic

Early Jurassic

Middle Jurassic

Late Jurassic

Early Cretaceous

Middle Cretaceous

Late Cretaceous

Terciary Cretaceous

Eocene

Obligocene

Miocene

Today

Plate Tectonics

Continental Drift

Early Triassic

Middle Jurassic

Late Jurassic

Late Cretaceus

Middle Paleocene

Pleistocene

Homo erectus was probably the first human to live in a hunter-gatherer society, and anthropologists such as

Richard Leakey believe that it was socially more like modern humans than the more Australopithecus-like species before

it. Likewise, increased cranial capacity generally coincides with the more sophisticated tools occasionally found with

fossils.

The first theory is that H. erectus migrated from Africa

during the Early Pleistocene, possibly as a result of the

operation of the Saharan pump, around 2.0 million

years ago, and dispersed throughout much of the Old

World. Fossilized remains 1.8 to 1 million years old

have been found in Africa (e.g., Lake Turkana[5] and

Olduvai Gorge), Europe (Georgia, Spain), Indonesia

(e.g., Sangiran and Trinil), Vietnam, China (e.g.,

Shaanxi) and India.[6]

The second theory is H. erectus evolved in Asia and

then migrated to Africa. The species occupied a West

Asian site called Dmanisi, in Georgia, from 1.85 million

to 1.77 million years ago, at the same time or slightly

before the earliest evidence in Africa. Excavations

found 73 stone tools for cutting and chopping and 34

bone fragments from unidentified creatures.

Cenozoic Evolution