A geological formation or period in the Devonian era (about 375-359 million years ago), named after the Chemung River in New York.
From the Chemung River in New York State, named after a Native American word. This geological term was established in the 19th century as scientists organized Earth's rock layers by location.
The Chemung period reveals a world of vast inland seas where armored fish ruled before dinosaurs even existed—rocks from this era contain fossils of creatures so alien they seem like science fiction.
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