Fossil Teeth Put Humans in Europe Earlier Than Thought

The fossils seemed hardly worth a second look. The one from England was only a piece of jawbone with three teeth, and the other, from southern Italy, was nothing more than two infant teeth. But scientists went ahead, re-examining them with refined techniques, and found that one specimen’s age had previously been significantly underestimated and that the other’s dating and identity had been misinterpreted.

They had in fact discovered the oldest known skeletal remains of anatomically modern humans in the whole of Europe, two international research teams reported .

The scientists who made the discovery and others who study human origins say they expect the findings to reignite debate over the relative capabilities of the immigrant modern humans and the indigenous Neanderthals, their closest hominid relatives; the extent of their interactions; and perhaps the reasons behind the Neanderthal extinction. The findings have already prompted speculation that the Homo sapiens migrations into Europe may have come in at least two separate waves, rather than just one.

In tests conducted at the Oxford Radiocarbon Accelerator Unit in England, the baby teeth from Italy were dated at 43,000 to 45,000 years old. Other analysis showed the teeth to be those of a modern human, not a Neanderthal, as previously thought when the fossil was unearthed in 1964 from the Grotta del Cavallo.
Similar tests at Oxford established that the age of the jawbone, from Kents Cavern near Torquay, Devon, had been significantly underestimated, by about 7,000 years, probably because of contamination when it was originally dated in 1989. The age is now set at 41,500 to 44,200 years old, making this the oldest known modern human fossil from northwestern Europe.

These dates are remarkable on several counts, scientists said. The earliest reliably dated European modern human specimen, up to now, came from the Pestera cu Oase site in Romania, a long way east from the English coast. The Romanian fossil’s age is estimated at 37,800 to 42,000 years old. No stone tools or other artifacts were found with it.

And in the absence of early fossils, archaeologists had not been sure who made some of the stone tools they were uncovering, the arriving humans or the Neanderthals. It had been generally assumed that modern humans probably entered Europe at least as early as 45,000 years ago, based on changing patterns of artifacts that soon followed.

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