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 ...
February 6, 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 ...
Pincers found on a tiny fossil that lived 500 million years ago could change how scientists understand the origin of spiders.
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