"... the men of Atlantis [Antarctica] had subjected the parts of Libya within the columns of Heracles as far as Egypt, and of Europe as far as Tyrrhenia." -- Plato, Timaeus, 360 B.C.
Since, it is your interpretation alone for Antartica to be the site for Atlantis, have you ever read about the geological timeline for the ice continent, which has been proved from numerous ice cores samples taken all over the continent.
What makes you think that humans ..to be precise ..hominids had developed even long before 40 million years (which is the time the continent got covered in ice)??