Late Devo­nian

Focus-Science and Technology - - Environment -

375 to 360 mil­lion years ago About 70 per cent of all species died in a se­ries of ex­tinc­tion pulses. Marine life was par­tic­u­larly hard hit, with co­ral reefs dis­ap­pear­ing al­most en­tirely. The cause is un­clear – pos­si­bly global

cool­ing due to oceanic vol­can­ism.

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