《科学》[Science]13年5月24日出版pdf全文

nero1981

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COVER A Classopollis meyeriana conifer pollen grain (~30 ( S+ T# [* W8 U+ z, r% ]
micrometers across) preserved in lake sediments deposited just after a massive,
: O7 I6 X0 q/ ?% M- G8 m7 s  m# {volcano-induced extinction event ~200 million years ago. This fossilized pollen
3 s6 R2 k/ z, G% J4 igrain is representative of the low-diversity plant assemblages found within the
+ z' j3 z6 k; \, O/ j( Etropics of the Pangean supercontinent during the postextinction recovery period. ) y$ C: J, V* O# ^* b) i3 N6 p
See page 941. Image: ( C; J3 U$ N, Y
Dee Breger and Sarah Fowell/Science Source
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