The fossilized fragments of a skull and lower jaw found at a cement plant near the city of Ramla in Israel might belong to a previously unknown early human species, who might have lived alongside the Homo sapiens, researchers believe.

Scientists at the Tel Aviv University and the Hebrew University of Jerusalem who analyzed the remains found by a team of international archeologists claim the new species of Homo, who might have lived between 420,000 and 120,000 years ago, could be a missing piece in human evolutionary history.

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The new species has been called Nesher Ramla Homo, after the name of the excavation site where the remains were uncovered.

The team of archeologists also found a collection of 6,000 stone tools made in similar fashion to the ones left by the Homo sapiens, leading researchers to believe the two species might have traded tips on tool-making as well as genes.