Note: on this article, Cordilleran ice sheet is not capitalized. On other articles, it is capitalized as Cordilleran Ice Sheet. This site uses the full capitalization.
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The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~2.6 million years.
Star Tales - Coma Berenices (ianridpath.com)Between Boötes and Leo lies a fan-shaped swarm of faint stars that was known to the Greeks but was not classed by them as a separate constellation. Eratosthenes referred to this swarm as the hair of Ariadne under his entry on the Northern Crown (Corona Borealis), but under Leo he said it was the hair of Queen Berenice of Egypt, which is how we identify it today.