@old_earthx: During evolution, multiple human species lived at the same time, such as Australopithecus, Homo habilis and Homo erectus. These species had different characteristics, such as brain size and tool use. Homo sapiens later lived next to Homo neanderthalensis and Denisovans. The simultaneous existence caused crossbreeding and genetic exchange. Evolution was therefore not a straight line, but a complex “family tree”. #neanderthal #oldearth #uncanny #scary #australopithecus #homohabilis #homoerectus