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Carl Zimmer@carlzimmer.bsky.social |
Scientists have been puzzling over a fossil called Pikaia for decades. Is this 508-million-year-old creature our pre-vertebrate cousin? Now researchers say the confusion came from how we looked it it. We've had Pikaia upside down the whole time. 🧪 Gift link: www.nytimes.com/2024/06/11/s...
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