Compound in 500millionyearold fossils sheds new light on Earth's carbon cycle
Feb 06, 2026
A UT San Antonio-led international research team has identified chitin, the primary organic component of modern crab shells and insect exoskeletons, in trilobite fossils more than 500 million years old, marking the first confirmed detection of the molecule in this extinct group.
https://phys.org/news/2026-02-compound-million-year-fossils-earth.html
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