claim: The geologic record provides us with abundant evidence for such perpetual natural climate variability, from icecaps reaching almost to the equator to none at all, even at the poles.
evidences.evidence_id: Mesozoic:106
evidences.article: Mesozoic
evidences.evidence: Even with the overall warmth, temperature fluctuations should have been sufficient for the presence of polar ice caps and glaciers, but there is no evidence of either.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS
evidences.evidence_id: Paleocene:104
evidences.article: Paleocene
evidences.evidence: Based on this and estimated plant-gas exchange rates and global surface temperatures, the climate sensitivity was calculated to be +3 °C when CO2 levels doubled, compared to 7° following the formation of ice at the poles.
evidences.votes: NOT_ENOUGH_INFO NOT_ENOUGH_INFO
evidences.evidence_id: Paleocene:118
evidences.article: Paleocene
evidences.evidence: About 60.5 mya at the Danian/Selandian boundary, there is evidence of anoxia spreading out into coastal waters, and a drop in sea levels which is most likely explained as an increase in temperature and evaporation, as there was no ice at the poles to lock up water.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Paleocene:93
evidences.article: Paleocene
evidences.evidence: Warm coastal upwellings at the poles would have inhibited permanent ice cover.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS
evidences.evidence_id: Triassic:34
evidences.article: Triassic
evidences.evidence: There is no evidence of glaciation at or near either pole; in fact, the polar regions were apparently moist and temperate, providing a climate suitable for forests and vertebrates, including reptiles.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS