chemical fossils


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chemical fossils

[¦kem·i·kəl ′fäs·əlz]
(geology)
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A new analysis of ancient chemical fossils has rocked the cradle of early animal evolution, bumping back compelling evidence of animal life to at least 635 million years ago.
Chemical fossils dating back at least635 million years may be the earliest evidence of complex animal life.
Eglinton pioneered modern investigations of chemical fossils in sedimentary rocks, providing tools that expanded knowledge about Earth's earliest life forms, ancient ocean temperatures, environmental changes on continents, and other details about our planet and its history.