Leaf-mining insects destroyed with the dinosaurs, others quickly appeared
University Park PA (SPX) Jul 25, 2014 - After the asteroid impact at the end of the Cretaceous period that triggered the dinosaurs' extinction and ushered in the Paleocene, leaf-mining insects in the western United States completely disappeared. Only a million years later, at Mexican Hat, in southeastern Montana, fossil leaves show diverse leaf-mining traces from new insects that were not present during the Cretaceous, according to pa ... more
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