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Why some animals become immortalized in stone as fossils

Why some animals become immortalized in stone as fossils

Most of what we learn about ancient animals comes from hard parts – shells, bones, and sometimes soft tissues that have been transformed into fossils over eons. How does this happen? The key lies in the chemistry around a carcass. As microbes move in, they use up oxygen and flip the local conditions from oxidizing to reducing within minutes to …

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