Middle Cambrian Trilobites of the Czech Republic – A Bohemian Rhapsody | AMNH https://www.amnh.org/research/paleontology/collections/fossil-invertebrate-collection/trilobite-website/trilobite-localities/middle-cambrian-trilobites-of-the-czech-republic-a-bohemian-rhapsody
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nearly 250 years — to 1770, in fact, when a certain Professor