In 1984, paleontologists found and saved a portal to prehistoric Wisconsin right in Waukesha County. Scientists are still discovering new fossils from it — most recently a leech that has pushed back the origins of the species by millions of years.
In 1984, paleontologists found and saved a portal to prehistoric Wisconsin right in Waukesha County. Scientists are still discovering new fossils from it — most recently a leech that has pushed back the origins of the species by millions of years.
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