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This remains the only site widely accepted as evidence of post-prehistory, pre-Columbian trans-oceanic contact with the Americas (Greenland is generally not considered part of North America).L'Anse aux Meadows was named a World Heritage site by UNESCO in 1978.The term skrælings is also used in the Vínland sagas, which relate to events during the 10th century, when describing trade and conflict with native peoples.The sweet potato, a food crop native to the Americas, was widespread in Polynesia by the time European explorers first reached the Pacific.Günter Tessmann in 1930 reported that a species of Curcuma was grown by the Amahuaca tribe to the east of the Upper Ucayali River in Peru and was a dye-plant used for the painting of the body, with the nearby Witoto people using it as face paint in their ceremonial dances.In December 2007, several human skulls were found in a museum in Concepción, Chile.A Norse colony was established in Greenland in the late 10th century and lasted until the mid-15th century, with court and parliament assemblies (þing) taking place at Brattahlíð and a bishop being posted at Garðar.The remains of a Norse settlement at L'Anse aux Meadows in what is now Newfoundland, a large island on the Atlantic coast of Canada, were discovered in 1960 and have been radiocarbon-dated to between 9 CE.
Chicken DNA sequences were matched to those of chickens in American Samoa and Tonga, and found to be dissimilar to those of European chickens.
"Radiocarbon dating of both the resin and body by the University of Oxford's radiocarbon laboratory confirmed they were essentially contemporary, and date to around CE 1200." Researchers including Kathryn Klar and Terry Jones have proposed a theory of contact between Hawaiians and the Chumash people of Southern California between 400 and 800 CE.
The sewn-plank canoes crafted by the Chumash and neighboring Tongva are unique among the indigenous peoples of North America, but similar in design to larger canoes used by Polynesians for deep-sea voyages.
Tomolo'o, the Chumash word for such a craft, may derive from kumula'au, the Hawaiian term for the logs from which shipwrights carve planks to be sewn into canoes. If it occurred, this contact left no genetic legacy in California or Hawaii.
This theory has attracted limited media attention within California, but most archaeologists of the Tongva and Chumash cultures reject it on the grounds that the independent development of the sewn-plank canoe over several centuries is well-represented in the material record.