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Land–plant productivity was greatly reduced after the end-Permian mass extinction, causing a pronounced “coal gap” worldwide during the Early Triassic. Newly obtained organic geochemistry data from the Chaohu area, south China, indicated an abrupt and profound terrestrial vegetation change over the middle part of the Early Triassic Smithian–Spathian (S–S) interval. Herbaceous lycopsids and/or bryophytes...
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