Every good mnemonic does fine... Mnemonics are great ways to learn items in a list. Treble staff lines. Taxonomical groups. Even geological time. Geological time scales can be measured at various levels. Eons, epochs, ages, etc. The most familiar is period. Here we get names like Jurassic, Quaternary, and Cambrian. The periods (excluding pre-Cambrian) from oldest to youngest are as follows: Cambrian Ordovician Silurian Devonian Carboniferous Permian Triassic Jurassic Cretaceous Paleogene Neogene Quaternary There are a variety of mnemonics already available, such as here or here . But I thought I'd add my hat to the naming pile. Let's get down to mnemonics! Mnemonic Phrase #1: Zombie Apocalypse Crawling Over Streets, Devouring Constantly, People Transformed, Jaws Craving Populations, Never Quitting. Mnemonic Phrase #2: Programming Charles Operated Some Decent Code Programs To Jump Competitor's Predicted Novemb...