These siclos are also fed by the samples on Bennu, old pollen, etc.
Each isotopic stage Gpod a period glacial or
Develop, and estadial or also interestadial. The estadial is a interglacial cold period during a not Earth cold one like being considered glacial. And the interestadial is a warm period within one of interglacial warm freezing that sufficiently is not prolonged or to be called.
One has numbered to the periods MY or OIS with Weasle odd numbers to and the ISNI ones to the glacial ones. They begin from presents/displays towards the past.