This might be relevant: https://www.theatlantic.com/science/archive/2019/08/arrogance-anthropocene/595795/ https://www.theatlantic.com/science/archive/2019/08/a

This might be relevant: https://www.theatlantic.com/science/archive/2019/08/arrogance-anthropocene/595795/ https://www.theatlantic.com/science/archive/2019/08/arroganc... > But the longest-lived radioisotope from radioactive fallout, iodine-129, has a half-life of less than 16 million years. If there were a nuclear holocaust in the Triassic, among warring prosauropods, we wouldn’t know about it.