Last modified on July 13, 2016, at 14:10

Human evolution

Human evolution or paleoanthropology is a theory within evolution which posits that mankind evolved from more primitive species over the course of 40 million years, with the most dramatic changes occurring during the last 2 million years. The field of paleoanthropology shows an absence of intermediary fossils, there is no plausible pathway for the development of the brain, and countless other disproofs to the hypothesis has rendered human evolution more of a philosophy of a belief system rather than a valid scientific concept.

Evolutionary claims for the hypothesis of human evolution

According to evolution, the genus Australopithecus represents the earliest hominids, of which they say took place over 4,000,000 years ago. Of the several species in the genus, A. afarensis and A. africanus are the only ones considered – based on pelvic structure rather than brain capacity - with the exact positions of each in the evolutionary line still in dispute.

The first member claimed to be of the genus Homo was H. habilis, found in eastern Africa, and called “handy man” due to a number of stone tools associated with the remains. H. erectus followed, and its remains were found in Asia and Europe as well as Africa. Both species also boasted an increased size in cranial capacity (750 cc for H. habilis and 900 cc for H. erectus) over the australopithecines (450 cc for A. afarensis). H. erectus is claimed to have evolved into an archaic version of modern man some 500,000 years ago, and over time according to this scenario gradually evolved into the man of today by 150,000 years ago.

Claimed chain of human evolution according to evolutionary science
Image Species Details Claimed Dates
human evolution
Ardipithecus ramidus Earliest claimed fossil hominid. 4.4 mya
Australopithecus anamensis.png
Australopithecus anamensis Found in Allia Bay in Kenya, and named in 1995. 4.2 - 3.9 mya
Australopithecus afarensis.png
Australopithecus afarensis - 3.5 - 2.9 mya
Homo habilis.png
Homo habilis Called handy man due to tools found near his remains 2.4 - 1.5 mya
Homo erectus.png
Homo erectus - 1.8 mya - 300,000 years ago
Archaic Homo sapiens.png
Homo sapiens (archaic) - 500,000 - 200,000 years ago
Neanderthal man.png
Homo sapiens neanderthalensis - 230,000 - 30,000 years ago
Homo sapiens skull.png
Homo sapiens (modern) - 120,000 years ago - present

See also

External links