horned viper, cerastes, sand viper, horned asp, Cerastes cornutus
['trilobite', 'chiton, coat-of-mail shell, sea cradle, polyplacophore', 'common iguana, iguana, Iguana iguana', 'sloth bear, Melursus ursinus, Ursus ursinus', 'barn spider, Araneus cavaticus', 'bustard', 'marmot']