Many scientists consider the "Cambrian explosion" -- which occurred about 530-540 million years ago -- as the first major appearance of many of the world's animal groups in the fossil record.
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Fossils: September 2021
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- 2 Nov: ISS National Lab User Advisory Committee to Host Introductory Meeting
- 3 Nov: 24th Annual FAA Commercial Space Transportation Conference
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- 10 Nov: Our Future In Space
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