The ancient giant tortoise (scientific name: Archelon ischyros), also known as the emperor tortoise and the ancient turtle, the type species is the "immortal ancient giant tortoise". Its scientific name Archelon comes from Greek, meaning "the emperor among turtles", and it is an extinct genus.
Pliosaurus fengshi refers to the giant pliosaur found in Svalbard, Norway. It weighed 33,000 pounds and is known as "the most ferocious hunter in history."