No, “Cryptozoic Breakdown” is not the answer to “album name?” à la the Dave-Barryesque “band name” catchphrase around here.
Here’s my question: Historical geology recognizes the Paleozoic, Mesozoic, and Cenozoic Eras, each of which are broken down into periods (Cambrian, Devonian, Jurassic, Quaternary, etc.), and the periods into epochs.
But together they constitute only the last 560 million years of the 4.6 billion years of earth’s history, the Phanerozoic Eon.
All the four billion previous years are lumped together as the Cryptozoic Eon or, more vaguely, Pre-Cambrian time.
When I was growing up, this was broken into the Proterozoic and Archeozoic Eras, each of which was in turn divided at least two periods. My recent reading says that this is accurate only for the Western Great Lakes, and probably doesn’t represent an accurate reflection of precambrian time in general.
So is there any standard, generally accepted breakdown into eras, periods, and such used by reputable historical geologists for the Cryptozoic?