Image credit - Mars Express
I remember seeing this in my youth - possibly pre-puberty. I remember a scene with a shadowy figure running down a slope at night. And, I remember a Robustus face reconstruction.
The twentieth century is of course going to be famous for elucidating the nature of the atom, the Big Bang Cosmology and more I can't list. But, we also established mankind as originating in Africa(recently, we may have pushed it to lower Europe. Well, what probably happened was some Homo Erectus came down from southern Europe and then evolved into Homo Sapiens, possibly in modern day Morrocco.)
Most people today just know that Louis Leakey found some bipedal primates in Oldovia gorge. But, as even this 1966 National Geographic video shows, Louis Leakey first discovered stone tools. The tools pointed to some stone tool maker. There had to be some fossils of the "tool-maker". Louis Leakey of course found it.
The Australopithacines likely started out eating fruits, nuts and vegetables. But, with stone tools, they started carving out the marrow of bones left over from the killings of larger and faster species. The larger stronger, and faster species might get to the prey faster; but, they couldn't get into the marrow of the bones. This was 1) the initial niche Australopithacines found, and 2) a path towards eating meat and getting bigger themselves. They would evolve into the Homo Erectus, which was the first lifeform to populate the entire Earth. To not be bound to one habitat, and to use fire.
It's one thing to find some bipedal primate, it's another to find that it is a stone tool maker, millions of years ago. A lifeform was technologically dependent for millions of years before it created art, language, and mathematics. Art and Language seems to go a few tens of thousands of years ago.
A recent article suggests exactly what I suggest, even in my Gospel of Truth, that art was pre-language -- > Ancient cave art may be origin of modern language Well, this article suggests something about echoes and picture placement. I don't go that far.