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In page Pre-Columbian trans-oceanic contact theories:

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Some carving details from around the 12th century in Karnataka that appear like ears of maize (Zea mays), a crop native to the New World, were interpreted by Carl Johannessen in 1989 as evidence of pre-Columbian contact.[4] These suggestions were dismissed by multiple Indian researchers based on several lines of evidence. The object has been claimed by some to instead represent a "Muktaphala", an imaginary fruit bedecked with pearls.[5][6]