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About the Cover

Cover Figure


COVER Fossil leaf from the earliest Eocene (~55.5 million years ago) of the Bighorn Basin, Wyoming. The beginning of the Eocene was characterized by rapid global warming after a huge release of carbon into the atmosphere and ocean. Plant fossils described on page 993 document rapid, continental-scale changes in the geographic ranges of plants coincident with the warming. [Photo: S. Wing]


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Science. ISSN 0036-8075 (print), 1095-9203 (online)