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GeoRef Subject
Chordata Hadrosauridae Lissamphibia Carnosauria Chondrichthyes Diapsida Dromaeosauridae Actinopterygii Amiidae Caudata Ceratopsia Colorado Cretaceous Crocodilia Eosuchia Eutheria Holostei Archosauria Ceratopsidae Laramie Formation Mammalia Mesozoic Multituberculata Anapsida Coelurosauria dinosaurs Amphibia Osteichthyes Ornithopoda Theropoda Tyrannosauridae Insectivora paleontology Reptilia Ornithischia Saurischia Senonian Pisces Testudines Theria Upper Cretaceous Tetrapoda United States Vertebrata
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