Scientists Find Key Building Block of Life in 500-Million-Year-Old Fossils
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Scientists Find Key Building Block of Life in 500-Million-Year-Old Fossils

Ancient fossils are revealing unexpected chemical survivors, challenging long-held assumptions about how biological carbon is preserved over Earth’s history. Trilobites are some of the most recognizable fossils on Earth, yet they have mostly been treated as mineral snapshots of long vanished marine life. Now, an international team led by UT San Antonio reports something far [...]