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First evidence of trilobites’ bizarre breathing organs uncovered Author: Jules Bernstein Share This: A new study has found the first evidence of sophisticated breathing organs in 450-million-year-old sea creatures. Contrary to previous thought, trilobites were leg breathers, with structures resembling gills hanging off their thighs.  Trilobite fossil preserved in pyrite. (Jin-Bo Hou/UCR) Trilobites were a group of marine animals with half-moon-like heads that resembled horseshoe crabs, and they were wildly successful in terms of evolution. Though they are now extinct, they survived for more than 250 million years longer than the dinosaurs.  Thanks to new technologies and an extremely rare set of fossils, scientists from UC Riverside can now show that trilobites breathed oxygen and explain how they did so. Published in the journal Science Advances, these findings help piece together the puzzle of early animal evolution.

Nigel hughesJin bo houMelanie hopkinsAmerican museum of natural historyScience advancesAmerican museumநைகல் ஹக்ஸ்ஜின் போ ஹூமெலனி ஹாப்கின்ஸ்அமெரிக்கன் அருங்காட்சியகம் ஆஃப் இயற்கை வரலாறுஅமெரிக்கன் அருங்காட்சியகம்