Petoskey stone
noun1
Biology, History, Human sciences, Natural sciences, Paleontology, Sciences A smooth fossil of a rugosan coral found in Michigan.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
Biology, History, Human sciences, Natural sciences, Paleontology, Sciences A smooth fossil of a rugosan coral found in Michigan.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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