Red Deer Cave People

The Red Deer Cave People appear to have been some of the most unusual humans in the past 20,000 years. They have been dated to have existed about 14,000 years ago, which is exceptionally recent in terms of human evolution. Yet, their fossils display many ‘archaic’ human features that are associated with more distant relatives in the family tree.

They might have been an ancient relic of humanity that held on until the end of the last Ice Age. Or they may have been a hybrid population, possibly related to Neanderthals and Denisovans. Or perhaps they show that Homo sapiens were extremely diverse throughout their history.

In 1989, human remains were unearthed at a cave in Yunnan, southern Chine. It became known at the Red Deer Cave because of the discovery of giant red deer fossils at the site. It is believed the human inhabitants cooked and ate the animals.

In 2012, scientists speculated whether the people in the cave represented a new human species. By studying their jaws and teeth, it was noted they had thick skulls with flat faces, broad noses, small chines, large molar teeth and prominent brow ridges, all features associated with older, long-extinct members of the human family tree.

The scientists had discovered a population of prehistoric humans whose skulls display an unusual mosaic of primitive features, like those seen in our ancestors thousands of years ago.

A 2015 study of a thigh bone discovered at Red Deer Cave suggested that individual weighed about 110 pounds (50 kilograms) and shared anatomical features with early Homo erectus or Homo habilis, both of which went extinct about 1.5 million years ago.

Since the femur was dated at just 14,000 years old, this did not fit the widely accepted chronology of human evolution. This femur was part of a living person a few thousand years before Homo sapiens developed agriculture, which sparked an evolution of culture that ultimately gave rise to complex civilizations.

It suggests that primitive-looking humans might have survived until very late in our evolution. But it is just one bone. A pre-modern species may have overlapped in with modern humans on mainland East Asia, but that case needs to be built with more bone discoveries.

By 2022, advancements in ancient DNA allowed a study of Red Deer Cave hominins’ genetics. It confirmed that they were modern Homo sapiens. In fact, they had a significant genetic connection to modern East Asians and Native Americans, who descended from the same groups of people.

So the Red Deer Cave People were not as unusual as first thought, even though the small population did have features not seen in any modern population of humans. With no clear explanation why they appeared this way, it hints that humans living towards the end of the last Ice Age were more diverse than those living across the world today.

 

 

https://www.msn.com/en-us/travel/tripideas/red-deer-cave-people-mysterious-humans-with-archaic-features-lived-just-14-000-years-ago/ar-AA1sjQUN?ocid=hpmsn&cvid=d22bab67fbce4483a434506da43bfd67&ei=110

What is This World Coming to? 5

Okay, I did find something to say on this subject, from a totally unexpected source. I was watching an episode on Nova the other night. Our local channel has 2 episodes on Wednesdays, and we usually watch the first, but not the second, because that’s getting too late for my husband, who is an early bird. That night, I heard that the 2nd episode was on Neanderthals, and human evolution has always been an interest of mine, so I stayed up to watch it.

As a whole, the episode explored a lot of different information about the humans known as Neanderthals, but my interest picked up during their talk about the small colony of Neanderthals who lived in caves currently located at the base of the Rock of Gibraltar.

One question this episode was asking is, “Did Modern Humans have any part in eliminating the Neanderthals?” They didn’t have an answer to that question, in the end. Not a simple one, anyway.

Neanderthals lived in the Middle East, Western Asia and Europe for as much as 700,000 years. During all of that time, the world was in an ice age, but the Neanderthals were built for it, and apparently did not find that a hardship.

About 100,000 years ago (maybe as early as 125,000 years ago), modern humans started to populate these same areas. The cold probably made them wear more clothes than the Neanderthals. And maybe there were instances of violence between the 2 sub-species.

However, the scientists said, it was unlikely the modern humans had traveled all the way around the Mediterranean Sea and got to the Rock of Gibraltar before that particular group of Neanderthals died out. What the scientists discovered in those caves showed that the Neanderthals living there not only hunted and gathered, they ate a variety of sea life as well, from seals to clams. Today, the mouths of those caves are practically at the sea line, but during the brunt of the ice age, the water line would have been about 59 feet (18 meters) lower.

Neanderthals lived in small groups. Scientists estimate their entire population may have been about 100,000, scattered in small groups across a quarter of the world. (How big is the town you live in?) And as they studied this particular group, they realized that it died out during a long and severe drought that hit the area.

My thought? Neanderthals were suited for cold. Not so much for heat. They had a short, stocky build that would help them retain body heat. But when the world heats up, that doesn’t do you much good.

If the world were going through the gradual changes of leaving the ice age, the flora and fauna would no doubt evolve in order to survive. But the current rapid pace of warming that we are in doesn’t leave us time for that. Those who currently live in the tropics might manage by migrating north or south to the temperate zones. Those in the temperate zones might find some comfort in the polar regions, although there’s not a lot of land for them to settle on. Once Antarctica thaws, that land would be available. Would it be fertile? Who knows?

It won’t be a matter of the fit being able to survive. Those who can accept what’s happening and deal with it will have a chance to survive.

And I’m back to looking for potential food for that migrating population.

Nomads

One of the panels I’ve given at several conventions this year has been “Where did the first Americans Come From?” In that panel, we discuss 6 different theories held by various scientists, from the one most of them agree is most likely to the one most people ridicule.

In doing my research for that panel-and just generally reading up on science subjects that spark my interest-I have arrived at one conclusion about humans and our ancestors... We have been nomads pretty much as long as we’ve been hominins. An article I read this past week has done much to confirm that, in my mind.

The article was actually about the Tibetan people and how they can thrive in the rarified atmosphere of the high altitudes where they live. Genetic studies have shown that most Tibetans (and a much lower percentage of the Han people in China) have an archaic gene. Not a mutant gene. An archaic gene inherited from a type of human that no longer exists.

This dead species of human is called the Denisovans. They are believed to have been related to-but distinct from-The Neanderthals (also extinct). And scientists probably would not know anything about the Denisovans at all, if someone had not found a single finger bone and 2 teeth in a Siberian cave. DNA study of those 41,000-year-old bones showed they belonged to people who were not Neanderthals, but definitely not modern human, either.

A genetic study of the Tibetan and Han people revealed they had inherited just enough Denisovan genetics to have the ability to up the production of hemoglobin in their blood. This increases their ability to get enough oxygen to their cells in an environment where most of us would have a tough time, due to lack of oxygen.

So, in order for the more modern humans to have bred with Denisovans (or the Neanderthals, for that matter) those earlier versions must have not just left Africa at some earlier time, but spread out across all of Eurasia. After all, Siberia is just about as far away from Africa as they could have gone. And later groups of hominins and humans would have exchanged DNA as they moved into the area, or passed through the area, or whatever.

If humans were not naturally nomads, they might never have left Africa, and then where would we be? Well, I guess we might all still be in Africa.

Distant Ancestors

In my never-ending quest to get my science knowledge a little more up-to-date (the better to write science fiction), I periodically surf the net in search of interesting but not too complicated science articles. This past week, I ran across quite a few articles about Neanderthals; when they died out, where they died out, why they died out, and so on.

You know about the Neanderthals; big heavy brows, broad flat noses, short chunky bodies. All those characteristics were helpful to them as they lived in Europe during ice age conditions. I don't remember how the heavy brows were helpful, but the noses helped warm the frigid air before it hit their lungs, and their compact bodies conserved body heat.

Up until recently, it was believed that the last of the Neanderthals died out in the area of Spain about 40-42,000 years ago, helped along on the road to extinction by the arrival of 'modern man' into Europe shortly before the demise of the Neanderthals. It wasn't certain that the two groups came into direct conflict and poked holes into one another, but if nothing else, they were both vying for the same food supply, and it was thought Neanderthals just couldn't effectively compete.

According to what I read this week, a new dating technique for old skeletons and other remains has now pushed the demise of the Spanish Neanderthals to around 50,000 years ago. So, were they completely gone before 'modern man' arrived? Probably not. The scientists were going to be conducting more tests on other sites, but it was rather expected that the new dating technique would also push back the date of modern man's arrival into Europe a similar amount of time. So, other than changing the position of a couple dots on a timeline, this didn't really change much.

On the other hand, genetic anthropologists have been analyzing tiny bits of Neanderthal DNA wherever they could find it, and by combining the results of all their work, they figure they've got about 12% of a complete Neanderthal DNA workup.

And it seems Jean Auel was correct when she wrote in Clan of the Cave Bear that Neanderthals and modern man had babies together. Scientists have compared current DNA to Neanderthal DNA and found that modern people have as much as 2% of their DNA from Neanderthals. The amount varies between ethnicities, but it's there.

So... I blame my son's unibrow on Several-times-great-grandfather Oogh, of the German Neanderthals.

Dogs of the World

I like dogs. (I love cats, but that's another story.) Lately I've been reading a few articles having to do with the genealogy of dogs, particularly in the Americas.

When I was a kid, school described North American indian tribes as having horses and ponies. I was too young to question that at the time. Later, it was explained that the ponies originated with the Spanish explorers in Mexico, and that they quickly spread throughout North America. I assumed the indian dogs were a similar story.

But it turns out that dogs had already been here when the Spaniards, the Vikings, and other Europeans arrived. It had been assumed that when the indigenous people died out, their dogs died with them, having no one to take care of them.

These recent articles explained that the original 'American' dogs came over the land bridge from Asia and Siberia with the people who became indigenous indian tribes. Those dogs did not die out and were not supplanted by European dogs. They survived, interbred with the European dogs, and are still here.

This was discovered by comparing the DNA of American dogs with that of Asian and European dogs. The American DNA was much closer to the Asian DNA than the European DNA. This was true as far east as Greenland.

So the Mexican hairless, the Peruvian hairless, and any number of other breeds are about as American as they can get.

My family has a mutt. He's a great addition to our family, and I assume he's an 'American' mutt. How about you? Tell me about your dog.

Billions of Possibilities

I ran across a headline a few days ago that stated that scientists now estimate that there may be billions of planets in the galaxy capable of supporting life. What took them so long to arrive at that conclusion?

The Science Fiction writers I grew up reading - Asimov, Clark, Bradbury, Biggles, Haldeman, to name a few - assumed there were plenty of planets that could support life, and that many of them had intelligent occupants. It seemed pretty logical to me.

This is the way I thought about it: solar systems like ours were created by the laws of physics. A star is born surrounded by swirling dust, the dust clumps together to form planets circling that star. Since that's how it happens, why wouldn't it happen around other stars as well? It happens because of physics, so it would.

So, plenty of planets out there.

Capable of supporting life? Some of those planets were certain to be in the 'Goldilocks Zone', where water could exist as liquid and not only as ice. And it didn't make any sense to me that out of all of those planets in the various Goldilocks Zones, ours was the only one that had an atmosphere, the only one that wasn't a gas giant or a small lump of rock. The math - in my mind - just didn't support the idea that out of all the solar systems in this galaxy, there was only one planet that could support life.

Supports an intelligent life? Why not? Whatever circumstances happen to create life, there are billions of possibilities for those circumstances to be replicated on other planets. And it actually only happens once? Again, the math doesn't support that outcome. And if we accept that has happened, then it only seems logical that some of that life would develop intelligence. Because, after all, even on Earth, man is not the only animal that has intelligence.

Perhaps, as scientists, they needed proof of the existence of all those other planets. This also seems strange to me. Why wouldn't they have followed the physics and math to the hypothesis that were many other planets out there that might be interesting? Instead, it seems to me that they went with the theory that we were the only planet with intelligent species, and now they are working to disprove that theory.

I think that's backwards.

Should I Try Something New?

Every author has their own methods of devising story plots. I do occasionally incorporate something of my dreams into my stories; a character, a scene, a situation. I do that rather sparingly, as I've learned that whatever I import from a dream doesn't hold up well through the many rewrites, and will either be pulled out because they no longer fit the story or will no longer bear any resemblance to the dream where they originally belonged.

I've been in recovery from surgery for about a week now. I do not consider this prime writing time, since my mind seems to be more confused than at other times. I have new activities that must be done - called physical therapy, meds that must be taken to keep the pain at bay, but otherwise make it hard to think, and sleep comes in naps ranging from 1-4 hours.

And yet ...

Most of those naps have ended with a simple typed paragraph, all variations on a theme. This is something new; I don't 'see' my stories as typed manuscripts, they come to me as movie scenes. I noticed, as they kept appearing, that they seemed to be summaries of various experiments where one ending is expected ... but they keep getting another ending.

I've let these paragraphs wander through my subconscious, wondering if I could possibly do justice to the story they seem to be pointing me to. It looks like it would be some sort of exo-psychological court drama.

Really! And it comes to ME to be written? I have enough trouble trying to figure out humans, let alone aliens. I don't have any real understanding of human psychology, and the fine niceties of human laws flow at least 10 feet over my head.

Still, it's an intriguing ideal. I didn't expect to take on a new and challenging project at this time. What doesn't kills us makes us better, right?

A Rose by Any Other Name...

We’re all aware that language evolves, right?

Somewhere in school - probably in an English class - the teacher gave us a glimpse at that evolution. Language in Europe and Asia started from an unknown Indo-European language that split into other languages, including Germanic and Latin. Latin developed into French, Spanish, Italian and Portuguese. That was all we heard about the ‘Romance Languages’.

That teacher spent much more time on the Germanic tongue. I remember she mentioned High German and Low German, though I don’t remember what the difference was. As I remember it, the Low German used in the British Isles became Old English, then Middle English, and eventually, something that resembled the English we speak today. To emphasize how much the English language had changed, she had us students read The Canterbury Tales - in the original (Old? Middle? I don’t remember).

It seemed hopeless, but I tried. If I was lucky, I might have seen 1 word out of 10 that possibly bore some semblance to a modern word, although the meaning had probably changed. Our ‘reading’ of the Tales was more of her translating to us.

This past week, I read an article that asserted that at least 23 words had traveled down through the various versions of language relatively unchanged for the past 15,000 years. I read the article twice to be sure I understood what they were saying: A core vocabulary has remained fairly unchanged from the original Indo-European, and sound remarkably similar in the various regional languages in that area today.

This list includes thou (you), I, not, that, we, who, man, mother, and hand. These are words that would have been used all the time, no matter what time period a person lived in. But as cave-dwellers became farmers, they would have needed new words to describe the soil, the plants and what they were doing with them. And so on until man’s vocabulary became full of ebooks, cyberspace and so on.

A few words that appeared on this basic vocabulary list did surprise the researchers, and one was bark (of a tree). It’s not a word we use incredibly often today, and those not constantly used are the ones that change. Anthropologists explained that 10-15,000 years ago, tree bark would have been extremely important; people would have talked about it all the time.

So, words change over time. It makes me wonder what a rose would have been called way back when. Maybe some sound combination that roughly translates into “pretty thing that stings”?

Who's Your Distant Ancestor?

Back when I was in grade school, I remember one of my sisters preparing a display for her high school science fair project. In that project, she compared Neanderthals to Cro-Magnons. I don’t remember what kind of grade she received, but I found her project fascinating. Two types of humans, living at the same time! I wondered what their interactions would have been like.

Since then, the same question has been explored in various medias. Jean Auel’s Clan of the Cave Bear made a big splash with readers as it followed the life of a young Cro-Magnon, also known as a modern human, who was raised by Neanderthals, if I remember correctly. Various educational shows on TV have been made about the Neanderthals, the Homo Sapiens, how they were different, how they were alike, and how they might have interacted before the Neanderthals died out.

The impression I’ve gotten over all these years was that scientists didn’t feel these two species of humans had interbred, and I wondered why they thought that way. Neanderthals are depicted as kind of squat, hairy, with a heavy brow, broad noses and receding chins. I could look around and see people who had those attributes, although it’s usually one per person, not all of them. But no, it seemed we were determined to blame our own ancestors for killing the last of the Neanderthals.

At last, a skeleton has been discovered in northern Italy that appears to be that of a mixed breed. Although mostly that of a modern human, the jaw displays a receding chin. The DNA reveals this person had Neanderthal mitochondrial (maternal) DNA. So it would seem the two species did interbreed, at least once.

Which opens up a whole new mess of ancient ancestors we didn’t realize were in the gene pool.

Sometimes when I’m working out the background for a story, I pick 2 or 3 genetic things to track throughout the population and then work out how those attributes manifest in the population over the generations. The gene for dark hair, for instance, will dominate a gene for lighter hair, and blond will dominate red hair. But after a few generations of almost all the people having dark hair, you will start getting a generation or two of lots of blonds, and a few redheads will crop up. The number of blonds will ebb and flow; the number of redheads tends to remain fairly steady.

I never thought to track the occurrence of receding chins.