" It superseded everything we imagined, " Dr. Kjaer said.

“它取代了我们之前想象的一切。”克亚博士说。

Kjaer explained that nearby waters were likely much warmer back then.

克亚尔解释说，当时附近水域的温度可能更高。

Kurt Kjaer of the University of Copenhagen was the study's lead writer.

哥本哈根大学的库尔特·克亚尔是这项研究的主要作者。

" My gut feeling as a geoscientist is that it's older, " Dr. Kjaer said.

“作为一名地球科学家，我的直觉是它还要更加古老。”克亚博士说。

Dr. Kjaer and his colleagues are scouting four-million-year-old sites in Canada with the hope of breaking their own record.

克亚博士和他的同事们正在侦查加拿大有400万年历史的遗址，希望打破他们自己的记录。