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devonian-mississippian marine carbonate(3)
first-generation college student(3)
funded proposal(3)
global-ocean redox condition(3)
global-ocean redox curve(3)
icehouse climate(3)
marine animal life(3)
marine anoxia(3)
marine carbonate(3)
multiple large positive 13c excursion(3)
multiple primary school science teacher(3)
ocean circulation(3)
relative amount(3)
u isotope(3)
u-isotope composition(3)
unique geologic time interval(3)
uranium isotope(3)
well-dated succession(3)
year study interval(3)
~(3)
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