• Fri. Mar 1st, 2024

Revolutionary Discovery: Ancient Ape Man Walked on Two Legs 3 Million Years Ago


Feb 13, 2024
Extinct Human Ancestor Walked Upright: Evidence from 50 Years Ago

Anthropologist D. Carl Johanson made a groundbreaking discovery in Ethiopia, uncovering the shin and thigh bones of a 3-million-year-old man who walked on two legs. The bones belonged to an ape man (hominid) of the genus Australopithecus. The 30-year-old scientist announced his findings at a news conference, stating, “We have absolute, concrete evidence that our ancestors walked on two legs over 3 million years ago.”

Fossil analyses suggest that several hominid species ambled around on two legs about 5 million to 7 million years ago. An upper leg bone of the oldest known, 7-million-year-old Sahelanthropus tchadensis, bears signs of upright walking including an inner projection near the hip joint. However, not all paleoanthropologists are convinced those features prove a two-legged gait. Some scientists think the bone belonged to an ape that may have walked upright at times.

Questions or comments on this article can be directed to feedback@sciencenews.org. Previously the staff writer for physical sciences at Science News Explores, Maria Temming is currently the assistant editor at Science News Explores. She holds bachelor’s degrees in physics and English and a master’s in science writing. This article was supported by readers like you through donations to Science News Explores’ quality science journalism efforts

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