RESEARCHRESEARCHARTICLE2500-A2500B700TrendsofbiodiversityandPco,419-343Ma:600y=4.23x-199.4020002000-R=0.70500(wqerl)15001500400342-253Ma:y=0.78x+103.67252-250Ma300R=0.52tood10001000O200500500PCO2100UO2oeceBiodiversity0.+00410390370350330310290270250100200400600700300500Age (Ma)Species diversitycDDiff yversus DiffxDiffyversus Diff x419-343Ma341-253May=0.023x+3.70y=0.062x+4.75100-100-6OOOR2=0.0008R2=0.0001OOOQO5050OO800O80OTodfoodCOO600-0MOOOOo0O88OQ0OOOOOOO800-50-50-00OOOOOOOOOO-100+-100-40-30-20-100102030405060-30-20-100102030405060-40Diff RichnessDiffRichnessScience 367, 272-277 (2020) 17 January 2020Fan et al
Fan et al., Science367, 272–277 (2020) 17 January 2020
BDeg
D=29.4°△R=26.5°±5.5°D=299NCBNCBLateJurassicPresent华北地块从晚保罗世和现在顺时针旋转示意图