They determined that ocean temperatures in the region ranged between 91Ã"šÃ‚° and 107Ã"šÃ‚°F (33Ã"šÃ‚° and 42Ã"šÃ‚°C) between 84 million and 100 million years ago in an era when dinosaurs roamed the Earth. Temperatures range between 75Ã"šÃ‚° and 82Ã"šÃ‚°F (24Ã"šÃ‚° and 28Ã"šÃ‚°C) in the same region now. The approximate uncertainty in the paleotemperature estimates is +/-2Ã"šÃ‚°C.