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How to Find Thousands of Oceanic Fossils in... Ohio?

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Modern-day Ohio is more than 600 kilometers from the ocean - yet it has thousands of ocean fossils dating back to the Ordovician, giving us a glimpse at its past under an ancient, fishless sea.
Hosted by: Hank Green
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A Sea without Fish: Life in the Ordovician Sea of the Cincinnati Region:

(page 78)
Fundamentals of Invertebrate Palaeontology: Macrofossils (Page 82)

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