Casas and Barceló work to define the upper limit of a strata of shells at Estancia Remolino. Though mussel shells predominate in the Yamaná middens, the bivalves were only a supplemental food source for the Indians — they couldn't provide enough fat calories to ward off the cold. "You may die of starvation with a belly full of shellfish," Piana said. Most calories came from seals hunted in local waters. "You would need more than 50,000 mussels to equal one sea lion," he said.
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- 3. Cultural Extinction