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Evidence of 90-million-year-old rainforest uncovered beneath Antarctic ice
Key Excerpts from Article on Website of NBC News/Reuters


NBC News/Reuters, April 2, 2020
Posted: December 7th, 2020
https://www.nbcnews.com/science/environment/evidence-90-mill...

Antarctica is now a harsh land of ice and snow, but has not always been that way. Earth’s southernmost continent long ago was home to temperate, swampy rainforests teeming with life, scientists said on Wednesday based on pristinely preserved forest soil they retrieved by drilling under the seafloor off Antarctica’s coast. The sediment core obtained by scientists working aboard the research icebreaker RV Polarstern in the Amundsen Sea near the Pine Island Glacier dated to about 90 million years ago during the Cretaceous Period when dinosaurs were the dominant land animals. The researchers estimated based on the soil content that this location, 560 miles (900 km) from the South Pole, experienced average annual temperatures of about 53-55 degrees Fahrenheit (12-13 Celsius) and average temperatures during the warmest summer months of about 68-77 Fahrenheit (20-25 Celsius). A modern temperature analogue may be New York City, according to marine geologist Johann Klages ... lead author of the research published in the journal Nature. The dark-brownish gray soil was composed of fine-grained silt and clay bearing remains of fossil roots in a dense network, pollen and spores spanning 65 types of plants, with individual cell structures clearly visible. “If you would go to a forest near you and drill a hole, it would probably look pretty similar,” Klages said. While they did not find any animal remains, Klages said there likely were dinosaurs.

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