Flashback to high school biology, anyone? Or even earlier, for some of us! I do love a good mnemonic, and this is probably one of the most common in natural history. There are, of course, other variants, and lots of them; I found a whole list at http://www.mnemonic-device.com/biology/taxonomy/domain-kingdom-phylum-class-order-family-genus-species/.  Not pictured: other divisions like subphylum, tribe, etc.

(Also, Dear King Phillip forgot to include himself in the Five Great Species!)