3 relations: Cambrian, Charles Doolittle Walcott, Chiton.
Cambrian
The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon.
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Charles Doolittle Walcott
Charles Doolittle Walcott (March 31, 1850 – February 9, 1927) was an American paleontologist, administrator of the Smithsonian Institution from 1907 to 1927, and geologist.
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Chiton
Chitons are marine molluscs of varying size in the class Polyplacophora, formerly known as Amphineura.
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