Published literature suggests the island was settled around 300–400 CE, or at about the time of the arrival of the earliest settlers in Hawaii. Some scientists say that Easter Island was not inhabited until 700–800 CE. This date range is based on glottochronological calculations and on three radiocarbon dates from charcoal that appears to have been produced during forest clearance activities.[5] Moreover, a recent study which included radiocarbon dates from what is thought to be very early material suggests that the island was settled as recently as 1200 CE.[6] This seems to be supported by a 2006 study of the island's deforestation, which could have started around the same time.[7][8] A large now extinct palm, Paschalococos disperta, related to the Chilean wine palm (Jubaea chilensis), was one of the dominant trees as attested by fossil evidence; this species, whose sole occurrence was Easter Island, became extinct due to deforestation by the early settlers.[9]