Human Migration

[1dave]

Fixed

[parfive]

The team dated the tooth dentin and enamel, the sediment stuck to the upper jaw, and tools found near the fossil.

“I don’t know how much more we could do with this little bone,” said Dr. Quam. “I think we’ve squeezed blood from a turnip here.”

Together, the techniques put the jawbone at between 177,000 and 194,000 years old . . .


www.nytimes.com/2018/01/25/science/jawbone-fossil-israel.html

[mohs]

For you Big History freaks
I stumbled upon this book at the library
Read it and like it immensely



www.publishersweekly.com/978-1-4767-5434-5


Not sure the author analysis
is correct that science & ideas are
is headed towards some great synthesis
But it a great treatise history of science and its power

For me...m stly--- where it breaks new ground:
is the explanation & insights science as unearthed
of how & why the Ancient Euro world (Bronze Age ect)
differed so much from the New World Civilization
such as the (Mayan Aztecs ect///) ?

Will require second reading
Highly recommended to Big history pals

Mohs

[parfive]

Couple more to chew on.


www.bbc.com/news/science-environment-42817323

www.sciencemag.org/news/2018/01/ancient-jawbone-suggests-our-species-left-africa-40000-years-earlier-expected

[1dave]

Jan 26, 2018 12:29:07 GMT -5 parfive said:

Couple more to chew on.


www.bbc.com/news/science-environment-42817323

www.sciencemag.org/news/2018/01/ancient-jawbone-suggests-our-species-left-africa-40000-years-earlier-expected

[parfive]

Hiking analogy this time, fwiw.


www.nytimes.com/2018/01/27/opinion/rambling-through-time.html

[rockyron]

Jan 27, 2018 3:43:14 GMT -5 1dave said:

Jan 26, 2018 12:29:07 GMT -5 parfive said:

Couple more to chew on.


www.bbc.com/news/science-environment-42817323

www.sciencemag.org/news/2018/01/ancient-jawbone-suggests-our-species-left-africa-40000-years-earlier-expected

Not trying to derail, but I worked for a dental lab in college making wax mockups for crowns and all.   look up lost wax casting..    That bicuspid is textbook.  The tricuspid is interesting because of whats called secondary anatomy, the the little grooves.  The groves look very sharp and the kind of result I did when I was a beginner.   In reality, the groves form because of different angles coming together so that they can channel food away from the tooth surface.    Those groves look like they were following a diagram and dug into pastor for effect.

Also those groves being so sharp would be a breeding ground for bacteria cause of all the old food that would be caught it them.  Also on the first pic, does it say its upper jaw?  

[1dave]

Jan 29, 2018 1:51:12 GMT -5 parfive said:

Hiking analogy this time, fwiw.


www.nytimes.com/2018/01/27/opinion/rambling-through-time.html

There’s a seafloor in Central Park. It crops out from under fallen ginkgo leaves, in black hunks sparkling with muscovite. This familiar rock was laid down as deep-sea muck half a billion years ago in a strange ocean haunted by alien exoskeletons, and gelatinous things that pulsed and squirmed.

But you can’t find fossils in this Central Park seabed — they were all cooked to schist tens of millions of years later in titanic continental collisions that pushed snowcapped mountains into tropical New England skies. As you can imagine, this was all a very long time ago — but then again, you can’t imagine it.

This is the central insight of geology. The world is old beyond comprehension, and our story on it is short. The conceit of the Anthropocene, the supposed new epoch we’re living in, is that humanity can already make claims to its geological legacy. But if we’re to endure as a civilization, or even as a species, for anything more than what might amount to a thin layer of odd rock in some windswept canyon of the far future, some humility is in order about our, thus far, infinitesimal part in the history of the planet.

Astronomy gets much of the credit for decentralizing the role of humans in the story of the cosmos, but just as Edwin Hubble placed our island universe in deep space, the geologist James Hutton placed us in deep time, gawking in awe in 1788 at the chasms of history that confronted him in the rocks at Siccar Point on the east coast of Scotland.

[parfive]

rockyron    Also on the first pic, does it say its upper jaw?

Yes. “The upper jawbone, or maxilla, was found by a team . . . “

Looks to be upper left, #9 – 16.

[parfive]

Another day, another jawbone.

Denisovan Jawbone Discovered in a Cave in Tibet

Until now, fossils of the ancient human species had been found in just one Siberian cave.
The discovery suggests that Denisovans roamed over much of Asia.

www.nytimes.com/2019/05/01/science/denisovans-tibet-jawbone-dna.html