![]() Researchers from Franklin & Marshall College in Lancaster, Pa., discovered the fossil leaves while investigating the lingering effects of milldams. The muck was laid down before one of Pennsylvania's 10,000 mill dams, called Denlinger's Mill, was built nearby, damming the stream and burying the mud and leaves in sediment. The fossil site is a muddy layer packed with leaves from hardwood trees that lived more than 300 years ago along Conestoga Creek in Lancaster County, Pa. ![]() Now, thanks to a rare fossil discovery in the Pennsylvania foothills, scientists can tell the full story of America's lost forests. Swamp-loving plants, like sedges and tussocks, are the fossil survivors, not delicate leaves from hardwood trees. From historic records and fossils, researchers know the landscape and plants are radically different today than they were 400 years ago.īut little direct evidence exists to prove which tree species filled the forests before they were cleared for fields and fuel. ![]() ![]() European settlers transformed America's Northeastern forests. ![]()
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May 2023
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