What did pig-like Entelodon and prehistoric horse Eohippus have in common? Who did 'walking whale' Ambulocetus share a taxomonic order with? Prehistoric Creatures of the Order collects members of the same taxonomic order - families of animals that share an important evolutionary trait - together in an informative and beautifully illustrated way. Fascinating text brings Kelsey Oseid's charming illustrations to life in this enchanting look at the animal kingdom.