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|    talk.origins    |    Evolution versus creationism (sometimes    |    142,579 messages    |
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|    Message 141,548 of 142,579    |
|    RonO to David Dalton    |
|    Re: Has the history of human evolution b    |
|    30 Sep 25 08:46:54    |
      a9f3a050       From: rokimoto557@gmail.com              On 9/29/2025 11:49 PM, David Dalton wrote:       > Here is a post by Julian on alt.buddha.short.fat.guy       > of a text by Mike Pitts.       > --------------------------------------       > A new report from the field of human origins had sub-editors reaching       > for their hyperboles. A million-year-old skull, we have learnt, has       > rewritten humanity’s story. The finality of this is misleading, but       > there is nonetheless something going on here.       >       > For decades, Chinese archaeologists have been investigating a site known       > as Yunxian, beside a tributary of the Yangtze river. The researchers       > have been rewarded with human fossils – to date, three skulls around a       > million years old. These bones have been preserved well but the skulls       > have been crushed. As a result, comparing them with other fossils, and       > therefore finding exactly which species they might represent, has been a       > challenge.       >       > The skulls are broken, but not distorted: most of the right bits are in       > the right shape, just not in the right places. In a new study, published       > in the journal Science, a dozen Chinese archaeologists and scientists       > joined by Chris Stringer of London’s Natural History Museum, claim to       > have overcome this difficulty using cutting edge digital imaging and       > computer modelling to put them back together again. After doing so, they       > have revealed that a nearly complete skull found in 1990 is something no       > one had predicted: a creature that suggests our own family tree, made up       > of Homo Sapiens, is twice as old as previously thought. What’s more,       > this early ancestor of ours was walking around Asia, but apparently not       > Africa. How did we get here? And what does it tell us about ourselves?       >       > It has long been agreed that humanity’s deep origins lie in Africa. A       > major genetic study released earlier this year found that humans and our       > chimpanzee ancestors separated from each other a little over five or six       > million years ago. What happened next on our side has become complex, if       > not downright confusing. The number of apparent species, and which parts       > of Africa, Europe or Asia they occupied and when, has come under       > constant scrutiny.       >       > The first close human lookalike appeared in Africa around two million       > years ago in the form of Homo erectus. Humans soon spread into – or       > appeared as related species in – parts of Europe and much of Asia.       > Making sense of the rare and fragmentary fossil evidence has been helped       > by genetic studies, which have confirmed the later and simultaneous       > presence of three species across Eurasia by around half a million years       > ago: Neanderthals – Homo neanderthalensis – in the west, Denisovans in       > the east, and the more widespread Homo sapiens occasionally breeding       > with the others. Ancient DNA and proteins recently identified a Chinese       > skull known as Dragon man as the first known Denisovan face, and       > Denisovans have been described, somewhat controversially, as a species       > known as Homo longi.       >       > The new study extends this picture with further complexities and a       > longer history. The Yunxian skull, say the scientists, has a mix of       > ancient and newly acquired features. Parts recall erectus fossils, while       > its brain is larger, and the cranium’s face and lower back instead       > compare favourably to Dragon man – or even, says Stringer, Homo sapiens.       > The skull’s age, however, independently shown by geology and the       > particular ecosystem of mammals in the site’s well-preserved remains,       > suggests it comes from the erectus era.       >       > The team resolves these apparent contradictions by rethinking the       > historic human landscape. In this new view, ancestral Neanderthals,       > Denisovans and sapiens separated a little over a million years ago,       > rather than around 500,000 years ago.The theory posits that       > Neanderthals, Denisovans and sapiens were alive at the same time as Homo       > heidelbergensis (traditionally thought of as the common ancestor of       > Neanderthals and sapiens) and later Asian Homo erectus. In other words,       > for hundreds of thousands of years our planet hosted five highly       > intelligent, large-brained types of human. In the long run, only one       > survived: us.       >       > What does this mean for other human fossils we have found? Homo       > antecessor, for example, a species identified from remains in a Spanish       > cave at Atapuerca, has been proposed as an ancestor to heidelbergensis;       > this would put it at the root of the group that includes us and       > Neanderthals. That has always been controversial (it’s the excavators’       > idea), and in the new analysis, the antecessor species is said to belong       > to the Denisovan group – and so, ultimately, doomed to extinction.       > Genetic studies have suggested different relationships, separating       > Dragon man from its African ancestors a relatively recent 700,000 years ago.       >       > And then there are the fossils we don’t have. If Neanderthals,              [continued in next message]              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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