 Trees such as the açai and tucuma palms also provided important supplements in the Marajo diet, as well being used for manufacturing items such as baskets or canoes (Roosevelt 1991; Meggers 1957).Evidence from human remains show that Marajo peoples limited their consumption of starchy root crops like manioc; rather, the heavy wear patterns of teeth suggest a diet based predominantly on seed crops, tree fruits, and fish (Roosevelt 1991