Human Development Timeline Image

This human anatomy diagram with labels depicts and explains the details and or parts of the Human Development Timeline Image. Human anatomy diagrams and charts show internal organs, body systems, cells, conditions, sickness and symptoms information and/or tips to ensure one lives in good health.

The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4.2 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.

The first stage of human development is obviously the conception. At this stage of development, a human being is not yet a human. In fact, after the fertilization period, it is called an organism. There’s no apparent resemblance to the human image. An organism does not even look like a human being. But life starts at this stage.

Human History Timeline. Combined Timeline. 200,000 B.C. Homo sapiens, the first modern humans, appear in Africa. 62,000 B.C. Bow and arrows with stone points (arrowheads) are used.