Panama central america dating Brazil sex chat site
Coates is mostly retired, but plans to write a rebuttal.
Nevertheless, he says, these new questions are important to answer because the rise of the isthmus was the "last big episode of global change." The effect of a new land mass on ocean currents is remarkably tricky to understand.
His favored alternative theory involves precipitation in Indonesia.
"I think this will turn the field on its head," Molnar says. Geologist Tony Coates, a former director of scientific research programs at the Smithsonian Institution who fathered the original theory 30 years ago, says Jaramillo's team "has done some beautiful geology," but has ignored earlier lines of evidence, such as the genetics of fossil organisms on either side of the isthmus.
So what was a 20 million-year-old fossilized tree doing there?