• The demise of the giant ape Gigantopithecus blacki

    From Primum Sapienti@21:1/5 to All on Sun Jan 21 20:45:45 2024
    https://www.nature.com/articles/s41586-023-06900-0.pdf
    10 January 2024

    Abstract
    The largest ever primate and one of the largest of
    the southeast Asian megafauna, Gigantopithecus
    blacki1, persisted in China from about 2.0 million
    years until the late middle Pleistocene when it
    became extinct2,3,4. Its demise is enigmatic
    considering that it was one of the few Asian great
    apes to go extinct in the last 2.6 million years,
    whereas others, including orangutan, survived
    until the present5. The cause of the disappearance
    of G. blacki remains unresolved but could shed
    light on primate resilience and the fate of
    megafauna in this region6. Here we applied three
    multidisciplinary analyses—timing, past
    environments and behaviour—to 22 caves in southern
    China. We used 157 radiometric ages from six dating
    techniques to establish a timeline for the demise
    of G. blacki. We show that from 2.3 million years
    ago the environment was a mosaic of forests and
    grasses, providing ideal conditions for thriving
    G. blacki populations. However, just before and
    during the extinction window between 295,000 and
    215,000  years ago there was enhanced environmental
    variability from increased seasonality, which
    caused changes in plant communities and an increase
    in open forest environments. Although its close
    relative Pongo weidenreichi managed to adapt its
    dietary preferences and behaviour to this
    variability, G. blacki showed signs of chronic
    stress and dwindling populations. Ultimately its
    struggle to adapt led to the extinction of the
    greatest primate to ever inhabit the Earth.

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  • From Primum Sapienti@21:1/5 to Marc Verhaegen on Thu Jan 25 22:54:44 2024
    Marc Verhaegen wrote:
    Op dinsdag 23 januari 2024 om 21:41:48 UTC+1 schreef JTEM is so reasonable:

    It's not science. It's propaganda.
    The "Cite" is literally saying nothing. "Gee, they're dead and
    we don't know why."
    Read your own cite. It went extinct between 200 and 300
    thousand years ago, but the current ice age with this
    glacial/interglacial cycle began significantly earlier. So
    if Kwimate Cha-Ching ("Hand me another research grant!")
    killed them off, why not hundreds of 1000s of years earlier?
    The 2.6 million year span they mention? That is the
    conventional start of this Quaternary Period: 2.6 Ma.
    But it's literally not telling you anything: "We don't know
    why it went extinct, KWIMATE CHA-CHING!"
    Here: https://www.pnas.org/doi/abs/10.1073/pnas.93.7.3016
    One had tools and smarts. The other went extinct.

    Yes, they say it themselves: https://www.nature.com/articles/s41586-023-06900-0.pdf
    "The cause of the disappearance of G.blacki remains unresolved".

    How nice that they presented detailed analysis of
    conditions during which G. lived.

    ". We used 157 radiometric ages from six dating
    techniques to establish a timeline for the demise
    of G. blacki. We show that from 2.3 million years
    ago the environment was a mosaic of forests and
    grasses, providing ideal conditions for thriving
    G. blacki populations. However, just before and
    during the extinction window between 295,000 and
    215,000  years ago there was enhanced environmental
    variability from increased seasonality, which
    caused changes in plant communities and an increase
    in open forest environments."


    "By about 300 ka there is evidence of a struggling
    G. blacki population as the number of G. blacki
    caves and teeth reduced (Fig. 3c), indicating a
    dwindling population. The stark change in the
    teeth banding of G. blacki indicates chronic stress
    in the population (Fig. 2d(iv)–(v)) and changes
    from its preferred dietary behaviour (Fig. 2c and
    Extended Data Fig. 10f,g) indicate that G. blacki
    was struggling to respond to the environmental
    changes on a potentially shrinking territory20.
    It would seem that its forest refugia changed its
    structure and became too open and disturbed for
    this species to sustain itself."

    A nicely laid out case.

    Can you or your film school acolyte tell us precisely
    why and how other species died out? Say, Brontops?
    Cynognathus? No?

    Perhaps you are jealous at the depth and extent
    of their analysis. All you have is snorkel noses...

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  • From Primum Sapienti@21:1/5 to JTEM is so reasonable on Sun Feb 4 22:22:47 2024
    JTEM is so reasonable wrote:
    Marc Verhaegen wrote:

    We're losing our time with these empty netloons, JTEM

    Sometimes I have this dream where the idiots defending
    the status quo aren't serious. They realize that the good
    Doctor has valid points. Maybe they just disagree with you
    on the details and NOT on the overall point of Aquatic Ape.
    But they can't admit it, not without jeopardizing publication,
    grants and of course academic status.

    Let's face it: Aquatic Ape is right. We're just arguing over
    the nitty gritty... the details.

    Let's face it - aa attracts people like you who believe in
    space aliens and Nostra-dumbass and creationism

    Go back to film school.

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  • From Primum Sapienti@21:1/5 to Marc Verhaegen on Sun Feb 4 22:37:06 2024
    Marc Verhaegen wrote:
    Op zaterdag 27 januari 2024 om 05:58:16 UTC+1 schreef JTEM is so reasonable:

    some netloon:
    How nice that they presented detailed analysis of
    conditions during which G. lived.> But they didn't. Are you honestly THAT dense? Here.

    It's above your reading level but give it a try:
    https://www.ncei.noaa.gov/sites/default/files/2021-11/1%20Glacial-Interglacial%20Cycles-Final-OCT%202021.pdf
    And you think that the climate was stable until
    roughly 300k years ago? Because... why?
    You have literally set aside absolutely everything you
    know about the climate, the Quaternary Period,
    the evolution of the genus Homo just so that you can
    lap your greedy tongue at the ass crack of the media.
    Wow. Dd you get tenure? Is that it? Because it sure
    looks like you did!
    And here you go, again:
    https://www.pnas.org/doi/abs/10.1073/pnas.93.7.3016
    There. Absolutely ZERO explanation missing.

    We're losing our time with these empty netloons, JTEM

    Anthropology without waterside adaptations = geology without plate tectonics.


    Like this

    <https://theaquaticape.files.wordpress.com/2011/03/human_aquatic_adaptations.jpg>

    :=}

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  • From Primum Sapienti@21:1/5 to JTEM is so reasonable on Sun Feb 4 22:34:32 2024
    JTEM is so reasonable wrote:
    Primum Sapienti wrote:

    How nice that they presented detailed analysis of
    conditions during which G. lived.

    But they didn't. Are you honestly THAT dense? Here.

    Yes, they did.

    It's above your reading level but give it a try:

    https://www.ncei.noaa.gov/sites/default/files/2021-11/1%20Glacial-Interglacial%20Cycles-Final-OCT%202021.pdf

    And you think that the climate was stable until
    roughly 300k years ago? Because... why?

    I said no such thing. I only posted a link to the paper.

    You have literally set aside absolutely everything you
    know about the climate, the Quaternary Period,
    the evolution of the genus Homo just so that you can
    lap your greedy tongue at the ass crack of the media.

    Wow. Dd you get tenure? Is that it? Because it sure
    looks like you did!

    And here you go, again:

    https://www.pnas.org/doi/abs/10.1073/pnas.93.7.3016

    There. Absolutely ZERO explanation missing.

    You finished last in film school, didn't you?

    Did you bother to read your own link?

    "...Homo and Gigantopithecus co-occur at Tham Khuyen
    about a half million years ago."

    Now, from the other paper's abstract:

    "... just before and during the extinction window
    between 295,000 and 215,000  years ago there was
    enhanced environmental variability..."

    You do understand that half a million years ago is
    OLDER than 295kya to 215kya?

    Johnny Johnny Johnny - what ARE we going to do with you?

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  • From Primum Sapienti@21:1/5 to erik simpson on Mon Feb 5 14:14:48 2024
    erik simpson wrote:
    On 2/5/24 11:18 AM, Marc Verhaegen wrote:
    Ape+human evolution & speech origins,
    modern insights:
    google
    - David Attenborough Marc Verhaegen
    - Gondwanatalks Verhaegen
    - aquarboreal
    - seafood, diving, song & speech
    - Mario Vaneechoutte cs 2024 Nature Anthropology 2,10007 “Have we been
    barking up the wrong ancestral tree? Australopithecines are probably not
    our ancestors” open access  https://www.sciepublish.com/article/pii/94
     That's a Chinese "predatory journal", and the article is crap. https://en.wikipedia.org/wiki/Scientific_Research_Publishing

    Nice catch.

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  • From Primum Sapienti@21:1/5 to JTEM is so reasonable on Tue Feb 20 20:30:34 2024
    JTEM is so reasonable wrote:
    Primum Sapienti wrote:

    Let's face it

    You worship Out of Africa purity & savanna retardation. I don't

    You worship mv. Get help.

    think there's much, if anything, you could face.

    Aquatic Ape is necessary. Even Out of Africa purity freaks

    It's quackology. Along with your space aliens and
    Nostradamus Nonsense.

    agree with it. It's how they say humanity spread. A few

    We live on land and traveled on land. Ancestors did not swim
    around the world.

    claim that it has been confirmed with finds along the
    Arabian peninsular. Of course, our ancestors were already
    in China more than 2 million years ago. The retrovirus

    Well inland. erectus finds in South Africa in the same
    time frame


    https://www.science.org/doi/10.1126/science.aaw7293
    3 Apr 2020

    Contemporaneity of Australopithecus, Paranthropus,
    and early Homo erectus in South Africa

    "The DNH 134 cranium shares clear affinities with
    Homo erectus, whereas the DNH 152 cranium represents
    P. robustus. Stratigraphic analysis of the Drimolen
    Main Quarry deposits indicates that unlike many
    other South African sites, there was only one major
    phase of relatively short deposition between ~2.04
    million years ago and ~1.95 million years ago. ...
    The DNH 134 cranium shares affinities with H.
    erectus and predates all known specimens in that
    species."

    "The DNH 134 Homo cranium has affinities with H.
    erectus and extends the species’ temporal range
    by ~200,000 to 150,000 years. DNH 134 being older
    than A. sediba complicates the likelihood of this
    species being ancestral to Homo in South Africa,
    as previously suggested. With the oldest occurrence
    of H. erectus at the southern tip of Africa, this
    argues against a suggested Asian origin for H.
    erectus."

    "We interpret the occurrence of Homo aff. erectus
    at this time in South Africa, and soon after at
    Dmanisi (73), as evidence for a major range
    expansion of this species (covering at least 8000
    km) both out of and within Africa around 2.0 to
    1.8 Ma ago."

    Ancestors went east later

    evidence points to a (roughly) 3.7 million year occupation
    What evidence is that?

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  • From Primum Sapienti@21:1/5 to Marc Verhaegen on Thu Feb 22 22:58:28 2024
    Marc Verhaegen wrote:

    This idiot is wasting our time, JTEM: he assumes Drimolen DHN-134 is
    erectus... :-DDD

    From a post by Pandora Dec 27:
    quote...
    This is what a male A. robustus from Drimolen looks like (DNH 155,
    cranial capacity 450 cc):

    https://www.nature.com/articles/s41559-020-01319-6/figures/2

    Compare to DNH 134:

    https://www.science.org/doi/10.1126/science.aaw7293#F2

    Even a nincompoop like you should be able to notice the major
    differences that would exclude DNH 134 from being a male A. robustus.

    endquote...

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  • From Primum Sapienti@21:1/5 to JTEM is so reasonable on Sun Feb 25 22:48:24 2024
    JTEM is so reasonable wrote:
    Primum Sapienti wrote:

    You worship mv. Get help.

    I came to Aquatic Ape quite independently to him, through

    Along with space aliens and NostraDumbAss. Nuff said.

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