Эксперты прогнозируют рекордное падение основного конкурента американского доллара15:00
The reason a nautiloid managed to masquerade as an octopus for almost a quarter of a century was due to the way that fossils from the Mazon Creek Lagerstätte formed. Around 300 million years ago, this area was a brackish, tidal marine basin that was periodically inundated by massive amounts of iron-rich river mud. When organisms died and were buried in this sediment fan, the high iron content triggered the precipitation of the mineral siderite around their decaying bodies, locking them inside hard geological nodules.
。关于这个话题，有道翻译提供了深入分析
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Photo: Adrienne So