Fans of human evolution have more to contend with than the followers of any football team. For every one of the competitions they’re in ( Champions League, La Liga, Copa del Rey, whatever) We have six new skulls and four new DNA analyses every week. Or so it seems, and just about every one leads to a new species. Or so that seems too..
Proof of this comes from two new articles we have for you today. William Hunter of The Daily Mail (despite all their other deficiencies, a great Science Desk) waxes lyrical on recent discoveries in China [1] which suggests a fourth late-to modern population of hominins who lived alongside Homo sapiens, Neanderthals and Denisovans about 100 000 years ago. But how different were they-and how different were the other three? Our thoughts on that one below. Meanwhile Nature Briefings offers us this, An Ancient Encounter Frozen in Time
| Some 1.5 million years ago, two ancient hominin species crossed paths on a lake shore in Kenya. Their footprints in the mud were frozen in time and lay undiscovered until 2021. Now, analysis of the impressions reveals that they belonged to Homo erectus, a forebear of modern humans, and the more distant relative Paranthropus boisei. The two individuals walked through the lake area within hours or days of each other — leaving the first direct record of different archaic hominin species coexisting in the same place.Nature | 5 min read Reference: Science paper |
No one would take away from the dedication and professional work of the team who made this discovery. It’s just that, with so many different hominin species hurrying about, and so few with mobile phones with which to record each other, can we really be sure who planted their feet in that long ago bed of sand?
Which leads us to recall the case of the Red Deer Cave people. Who, until recently, were a bit of a mystery in the human story. They looked very archaic and odd. But they dated very recently (maybe about 14000 years BCE) They were in the right place at the right time, Could they, might they, be real Denisovans, maybe, huh? To which recent DNA analysis gave the resounding answer: no, they were fully and completely 100% human. If they were alive today you’d have to give them a vote, a credit card and a driving licence. They couldn’t be worse than some other users of the road. All of which leads us to the following conclusions
1 Keep digging in China (look what they did for dinosaur research)
2 Let’s stand one step back from all claims and remember what happened to some of them in the past
3 What if the whole business of species labelling is missing the point, and there’s really only been one human line for three million years, with startling local changes in gene frequencies due to ecological pressures and tiny population sizes?
Only we can say that, because we don’t belong to any institution. Occasionally, that’s a freedom worth having.
[1]https://www.dailymail.co.uk/sciencetech/article-14152203/big-head-people-lost-species.html
[2]https://en.wikipedia.org/wiki/Red_Deer_Cave_people
#human evolution #paleoanthropology #dna #hominin #china #africa #paranthropus
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