Researchers赌博,雾都孤儿-生娃进程大揭秘!产房里，孕妇阅历故事 in Chile s十二星座性情ay they discovered a human footprint they believe is the oldest ever found in the Americas.
Scientists involved in the fossil discovery said th赌博,雾都孤儿-生娃进程大揭秘!产房里，孕妇阅历故事e footprint dates back at least 15,600 years. Their results are reported in a study published in the scientific journal PLOS One.
The footprint was discovered in 2011 at the Pilauco excavation site in the city of Osorno. A student from Chile's Austral University found the footprint. Scientists worked for years to confirm whether the print could have come from a human species.
Mario Pino is a professor a赌博,雾都孤儿-生娃进程大揭秘!产房里，孕妇阅历故事nd geologist at Austral University's Institute of Earth Sciences. He helped examine the fossil. He said carbon dating methods were used to link the footprint to the same time period as plant material found in the area.
P左下腹部隐痛的原因ino said his team used the print to estimate the general size, shape and structure of the human foot. Researchers believe it belonged 欢欢喜喜过大年to a barefoot man who weighed about 70 kilograms.
Kare草薙n Moreno is also with Austral University and a lead researc何倍倩her on the project. She said the print show旭ed evidence of 子宫息肉clearly formed toes and a ball at the back of the foot. This would be "consistent with what would happen to (a human) who tries to walk in the mud," Moreno said.
Pino said the man likely belonged to a species called Hominipes modernus, which is related to Homo sapiens. Homo sapiens is the species of human that exists today.
皮诺标明，该男dpcqxs子或许归于一种被称之为Hominipes modernus的物种，它跟智人（Homo sapiens）相关。
Moreno said the latest find provides some of the oldest evidence of humans in the Americas. "Little by little in South America, we're starting to find sites with evidence of human presence," she said. "But this is this oldest in the Americas."
The study st火影忍者究极风暴ates that the same area in Chile has also produced fossils providing information on other animals, including early elephants and 赌博,雾都孤儿-生娃进程大揭秘!产房里，孕妇阅历故事an an願いcestor of American horses. The digging teams have also found e玩具总动员vidence of invertebrates, as well as different forms of ancient plant life and wood material.
Moreno said the researcher曾秋雨s also found stone artifacts within the same layers of soil as the footprint. This, she believes, could provide more evidence to support a theory 赌博,雾都孤儿-生娃进程大揭秘!产房里，孕妇阅历故事that human settlements existed in the Americas well before a group known as the "Clovis" hunters.
The Clovis group was a prehistoric culture that many scientists believed were the first to arrive in North America -- about 13,000 years ago.
But some scientists have suggested that artifacts discovered in recent years suggest other humans might have arrived in the Americas about 1赌博,雾都孤儿-生娃进程大揭秘!产房里，孕妇阅历故事,500 years earlier.
I'm Bryan Lynn.