Grand Canyon Fossils Unveil Half-Billion-Year-Old Evolutionary Marvels
TL;DR Summary
A half-billion-year-old fossil of a tiny penis worm with a retractable spiky mouth was discovered in Arizona, suggesting the Grand Canyon once had ideal conditions for diverse and risky evolutionary developments.
- Fossilized penis worm suggests Grand Canyon was an evolutionary hotbed The Washington Post
- Grand Canyon Fossils Offer Glimpse Into When Complex Life Appeared The New York Times
- Half a billion years ago, the Grand Canyon teemed with life Tucson Sentinel
- Treasure trove of half-billion-year-old animal fossils in Grand Canyon cosmosmagazine.com
- Stunning Grand Canyon Fossils Reveal Evolution's Weird Experiments ScienceAlert
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