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Massive insect body size 300 million years ago may not have been due to high atmospheric oxygen
- March 25, 2026 at 4:00 PM
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Three-hundred-million years ago, Earth was very different. The continents had coalesced into Pangea, which was dominated in its equatorial regions by vast coal-swamp forests. With high atmospheric oxygen levels, wildfires were common.
Originally published at Phys.org