article_snippet.sent: Professor Sonia Harmand, a palaeolithic archaeologist at Stony Brook University in New York who led the team that discovered the tools, said Professor Sonia Harmand, a palaeolithic archaeologist at Stony Brook University in New York who led the team that discovered the tools stumbled across Professor Sonia Harmand, a palaeolithic archaeologist at Stony Brook University in New York who led the team that discovered the tools by accident.
article_snippet.sent: the team that discovered the tools had been searching for the site where a controversial human relative called Kenyanthropus platyops had been discovered in 1998.
article_snippet.sent: As some tools were locked inside sediment left behind by the receding desert lake, the researchers were able to accurately estimate the time when the researchers were dropped there.
article_snippet.sent: By tracking changes in the Earth's magnetic field recorded in the sediment, the researchers were able to pinpoint the date to 3.3 million years ago.
article_snippet.sent: Researchers working in Dikika in Ethiopia - where an Australopithecine child was discovered- reported they had found cut marks on animal bones dated to 3.4 million years ago.
article_snippet.sent: they claim that Researchers working in Dikika in Ethiopia - where an Australopithecine child was discovered- reported they had found cut marks on animal bones dated to 3.4 million years ago had been made by human ancestors using tools were hugely controversial.
article_snippet.sent: According to Alison Brooks, an anthropologist at George Washington University in Washington DC, the finds are 'very exciting.
article_snippet.sent: Dr Simon Underdown, an anthropologist at Oxford Brookes University, described the research as 'exciting'.