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World's oldest known swimming jellyfish species found in "exceptional" fossils buried within Canada mountains - CBS News
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505 Million-Year-Old Fossil Bed in Canada Reveals the Oldest Known Species of Swimming Jellyfish | Science Times
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Fossils For Sale | Fossils-UK.com | Early Life! One of the Oldest Fossils Ever! Rare Ediacaran Fossil Jellyfish 600 Million Years Old from Ukraine:- Cyclomedusa sp.
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