leatherback turtle, leatherback, leathery turtle, Dermochelys coriacea
['three-toed sloth, ai, Bradypus tridactylus', 'megalith, megalithic structure', 'horned viper, cerastes, sand viper, horned asp, Cerastes cornutus', 'axolotl, mud puppy, Ambystoma mexicanum', 'killer whale, killer, orca, grampus, sea wolf, Orcinus orca', 'trilobite', 'bustard']