What paleoclimatic evidence disproved worldwide cooling as a cause for the "tropical glaciations" between 300 and 220 million years ago?
A) tropical paleosols and laterites in Antarctica
B) massive reef limestones in Alberta and the Eastern Arctic
C) massive crossbedded red sandstones suggesting former tropical deserts
D) tropical Paleozoic coal swamps across the Northern Hemisphere, particularly the Eastern U.S. and central Europe
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