A 55-million-year-old mystery on a New Zealand cliff has finally been solved—thanks to a hand-written notebook. According to ScienceDaily, researchers have unlocked the story of a 1.2-meter fossil fish, an ancient tarpon-like predator preserved in remarkable three-dimensional detail. The key? Field notes left by the original collector nearly 30 years ago, recently rediscovered. Without those handwritten records, the fossil's full significance remained hidden.

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