Human history in the U.S. is 100000 years longer than we thought

Human history in the U.S. is 100000 years longer than we thought

Researchers with the San Diego Natural History Museum have said in a newly released paper that the remains of a Mastodon that were found in 1992 during a freeway excavation in San Diego show signs of human activity in North America 120,000 to 140,000 years ago, according to National Geographic.

Advanced radiometric dating technology allowed scientists to determine the mastodon bones belong to the Late Pleistocene period, or 130,000 years old, with a margin of error of plus or minus 9,400 years.

In prehistoric times, a species of humans - probably Neanderthals or some other kind of hominids - were present in what is today the State of California.

"Using femur bones of recently deceased elephants, Holen had conducted two separate experiments in which he demonstrated that a stone used as a hammer causes fresh limb bones to fracture in a distinctive way", the museum said.

If this is true, then the Cerutti Mastodon site is the oldest archaeological site in North America, altering theories of when the Homo arrived at the continent. These push-and-pull forces crush bone, hack apart human and animal remains, and turn solids to dust.

Many scientists are skeptical of the study, saying the findings don't prove something else didn't smash the bones, only that humans might have done it, the NYT reported.

The first humans to set foot in the Americas arrived some 25,000 years ago - or so we thought.

Softwood lumber deal possible, but 'not there yet,' says Freeland
Yesterday, Trump upped his rhetoric against his neighbours which is something that he had not done over the past few months. As a builder, they perhaps reasoned, Trump might be more sympathetic to anything that would limit the price of lumber.

"I think they've done their homework", he said, noting that Holen is one of the world's leading experts on what mastodon bones look like when they are broken naturally versus when they are smashed open by humans. The location is now called the Cerutti Mastodon Site, after discoverer Richard Cerutti of the San Diego Natural History Museum. Also found buried at the site were large stones which appeared to be used as hammers and anvils.

San Diego Natural History Museum palaeontologist Tom Deméré said until now the oldest widely accepted date for human presence in the New World was 14,000 to 15,000 years ago, making the San Diego site almost 10 times older.

Attempts to establish the age of the site using radiocarbon dating failed, because there was no collagen preserved in the bones, the scientists said.

The finding poses a lot more questions than answers: Who were these people? Are they part of an early - but failed - colonisation attempt? Here's the rub. nearly all previous evidence points to humans arriving in the Americas approximately 20,000 years ago.

Not everyone agrees that the evidence points to a human presence, however. Shortly, researchers found stone tools and bones.

"The models were immensely helpful in interpreting and illustrating these objects", he said. The 3-D models helped us understand what we were looking at and to communicate the information much more effectively. "It went against everything I'd ever been taught and everything that I ever thought I knew. That's what we're trying to encourage by making these models available". "It's hard to argue with the clear and remarkable evidence that we can see in all of this material", said archaeologist Richard Fullagar of Australia's University of Wollongong, calling the conclusions "truly incontrovertible".

San Diego Natural History Museum Paleontologist Don Swanson pointing at rock fragment near a large horizontal mastodon tusk fragment. Founded in 1874 by a small group of citizen scientists, the museum's mission is to interpret the natural world through research, education and exhibits; to promote understanding of the evolution and diversity of southern California and the peninsula of Baja California, Mexico; and to inspire in all people respect for the environment.

Related Articles

  • Elisabeth Moss Tells A New Tale

    Elisabeth Moss Tells A New Tale

    Warning: the following contains spoilers for the first three episodes of The Handmaid's Tale: "Offred", "Birth Day", and "Late". I am to make myself clean, washed and brushed like a prize pig. "So that's going to be a surprise to some people, too ".

    Japan, US test anti-missile ships during joint military exercises

    The USS Carl Vinson aircraft carrier is headed toward the Korean Peninsula and will hold a joint exercise with South Korea. US President Donald Trump had earlier vowed to send an "armada" to the region over North Korea's missile tests.
    Chris Soules Arrested: Fans React to Alleged Deadly Car Accident

    Chris Soules Arrested: Fans React to Alleged Deadly Car Accident

    While several of Soules' violations were speeding tickets, a few have involved illegal drinking and reckless driving. Soules made a social media post Monday, just a couple hours before the crash, showing him working in a farm field.
  • DJI incorporates with Hasselblad to launch an epicly powerful drone camera

    DJI incorporates with Hasselblad to launch an epicly powerful drone camera

    As an added bonus, via their HDMI input, the goggles can also be used for things like watching movies or playing video games. With a battery life per recharge of around six hours, the Goggles pack plenty power.
    Illinois House approves bill providing for public funding of abortions

    Illinois House approves bill providing for public funding of abortions

    Barbara Flynn Currie of Chicago read from a statement she said Republican Gov. These findings are consistent with previous polls from various groups.
    Watch Harry Styles Announce Week-Long 'Corden' Residency

    Watch Harry Styles Announce Week-Long 'Corden' Residency

    Harry Styles and James Corden are officially the new Timberlake and Fallon, except 100 times cuter and more British. With Harry confirming that this is his plan, James voiced his concerns and said he found the situation "weird".
  • Watchdog says ASEAN must stand vs. killings in Philippines

    Watchdog says ASEAN must stand vs. killings in Philippines

    It's the second-largest island in the South China Sea's hotly contested Spratlys archipelago. "Who can pressure China? Us?" Asked how ASEAN should deal with China, Duterte said dialogue was the "only luxury we have".
    Kelly Sotherton set to get third Olympic bronze medal

    Kelly Sotherton set to get third Olympic bronze medal

    She finished fifth in in 2008 but has climbed to third after doping bans for Ukraine's Lyudmila Blonska and Chernova. And now she has been upgraded to a bronze medal for the 2008 Olympic 4x400m relay.
    Red Sox Pitcher Throws At Manny Machado's Head

    Red Sox Pitcher Throws At Manny Machado's Head

    You don't have to be a master lip-reader to figure out that he was telling Machado he did not agree with his teammate's decision. Jackie Bradley Jr . homered for the Red Sox , who were without the injured Pedroia. "People are going to think what they want.
  • Dembele turns Bayern defenders inside out to make it 3-2 Dortmund

    Dembele turns Bayern defenders inside out to make it 3-2 Dortmund

    Bayern are already without Germany's goalkeeper Manuel Neuer, who has a foot fracture, for the rest of the season and Sven Ulreich will again deputise.
    Amid Oppisition protest, Kerala Minister MM Mani says 'didn't insult women'

    Amid Oppisition protest, Kerala Minister MM Mani says 'didn't insult women'

    The Minister also said that the news about Pembilai Orumai's protest was false. "I can not speak like a scholar. State BJP leader Sobha Surendran said the Chief Minister should ask for Mani's immediate resignation.
    New Secret Service director to be named

    New Secret Service director to be named

    The position of Secret Service director is filled by presidential appointment and does not require confirmation by the Senate. Clancy returned to his retirement in March, allowing President Donald Trump the opportunity to fill the post as he sees fit.