Scientists have found a "degraded" mammoth tooth at an ice age dig in St Helier.
Dr Matt Pope from University College London is in the island leading the dig and told the BBC "there was a chance of preserving the tooth and finding other animals that were hunted" at the time.
He said the area could form part of a much larger hunting ground and encampment for Neanderthals.
A number of mammoth remains have been found in the island since the 1970s, mainly at La Cotte de St Brelade.
Jersey was one of the last places Neanderthals called home in Western Europe.