Before revision: Evolutionary significance The first definitive evidence of habitual orthograde posture in human evolutionary lineage begins with Ardipithecus ramidus kadabba , dating between 5.2 to 5.8 million years ago.
After revision: Evolutionary significance The first definitive evidence of habitual orthograde posture in human evolutionary lineage begins with Ardipithecus ramidus , dating between 5.2 to 5.8 million years ago.