In one study from 2012, using mostly ocean cores, researchers showed that global temperatures over the past 22,000 years track closely with carbon dioxide levels – first CO2 increased, then temperatures went up.

在 2012 年的一项主要使用海洋岩心的研究中，研究人员表明， 过去 22, 000 年的全球温度与二氧化碳水平密切相关——首先是二氧化碳增加， 然后温度上升。

And we can see from pollen and isotopes found in ocean cores that the region of Ecuador where Tanque Loma is located dried out during the time period when the bonebed was forming.

而我们从海核中发现的花粉和同位素可以看出，Tanque Loma所在的厄瓜多尔地区在骨床形成的时间段内已经干涸。