Human ancestors are the study of any species, human included and is aided by the comparison of fossil structures to modern ones of known function. In addition, we infer human activities and abilities from the objects they leave behind.
Although paleontologists, the study of ancient human ancestors is a subfield of evolutionary biology, it is more commonly known as paleoanthropology since, for a large portion of the evolution of humans, cultural evolution followed biological evolution.
Researchers and students can examine the variations in brain and body size, locomotion, food, and other characteristics of the early human species way of life during the last 6 million years thanks to thousands of human ancestors' fossils. The oldest undisputed hominid, anamensis, has fossils that date back as far as 4.2 million years.
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