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3     introductory story - Crescentia
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The story of Crescentia alata, the jicaro tree, will serve to introduce the Pleistocene megafauna extinction, which occurred at the end of the Pleistocene, about 11,500 years ago (9,500 BC). Crescentia alata is today a common tree on the Mexican and Central American countryside. (Its closest relative that you might know here in Pennsylvania is the catalpa tree, the only temperate zone tree in the Bignoniaceae, a species-rich tropical family.)
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