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3. What is the percent composition of fern spore 1 in the sediment of the Early Tertiary? You may write a

range.l

User Dean Chiu
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grains and fern spores to form a
picture of the living landscape before and after
the K-T event.
... Cretaceous period, Tertiary
period, angiosperm, gymnosperm, pollen,
spores, extinction, fossil, sediment,
User JJJ
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