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(active 4.5 billion BCE - Present)
20th c American Lower Cambrian Animals
NATURE (active 4.5 billion BCE - Present) Primary
Cadiz. California. U.S.A.
The trilobite was an arthropod whose fossil record extended over a period of 300 million years. Photographed 1959.
Caption: MCCLAIN Hubert A. | Trilobite Fossils | 1959 | American |
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