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By Gisela Crespo, CNN, April 26, 2017 The remains of a mastodon discovered during a routine excavation in California shows possible human activity in North America 130,000 years ago -- or about 115,000 years earlier than previously thought.Paleontologists with the San Diego Natural History Museum discovered the remains of the elephant-like animal more than 20 years ago.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."The bones and several teeth show clear signs of having been deliberately broken by humans with manual dexterity and experiential knowledge," Holen said in a press release.Experts agreed that the earliest records of human ancestors in North America is about 15,000 years old, but the discovery of the Cerutti site "shows that human ancestors were in the New World ten times that length of time," said paleontologist Lawrence Vescera.
The study, to be published this week in the science journal Nature, said the numerous limb bones fragments of a young male mastodon found at the site show spiral fractures, indicating they were broken while fresh. Då kan du sluta leta redan nu för Erotik Dating är Sveriges ledande knullkontakt sida med flera hundratusentals medlemmar och växer stadigt för varje dag som går.Denna sidan är för Svenskar som söker efter en partner som är intresserad av en sexuell relation, kanske lyckas du finna din framtida partner via oss.It has a long head and long tail and wing-like forelimbs.Its serrated teeth, like steak knives, suggest it was a carnivore.