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AUSTRALIA-FISH HEART-FOSSIL-DISCOVERY

(220916) -- SYDNEY, Sept. 16, 2022 (Xinhua) -- The fossil of the arthrodire, where the 380-million-year-old heart was discovered, is seen at the Western Australian Museum on Sept. 8, 2022. Aussie researchers have discovered a 380-million-year-old heart -- the oldest ever found -- in an ancient jawed fish named arthrodire, alongside a separate fossilised stomach, intestine and liver, providing new insights on biological evolution. TO GO WITH "Aussie researchers discover 380-million-year-old heart of ancient fish" (Curtin University/Handout via Xinhua)