Dinosaurs

• A US Geological Survey crew headed by Eugene Stebinger and a US National Museum crew headed by Charles Gilmore worked together to excavate the first dinosaur discovery of the Two Medicine Formation
  Two Medicine Formation
  The Two Medicine Formation is a geologic formation, or rock body, that was deposited between 83.5 ± 0.7 Ma to 70.6 ± 0.6 Ma , during Campanian time, and is located in northwestern Montana...
  
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Newly named dinosaurs

Name	Status	Authors		Notes	Images
"Aggiosaurus"	Misidentification.	Ambayrac		A misidentified metriorhynchid.
"Elopteryx Elopteryx Elopteryx is a genus of troodontid maniraptoran theropod dinosaur based on fragmentary fossils found in late Cretaceous Period rocks of Romania. These fossils date from the early-mid Maastrichtian faunal stage, c.71-68 million years ago... "	Nomen dubium Nomen dubium In zoological nomenclature, a nomen dubium is a scientific name that is of unknown or doubtful application... .	Andrews		Probable a misidentified bird Bird Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from... , but may be a troodontid dinosaur.
Hypacrosaurus Hypacrosaurus Hypacrosaurus was a genus of duckbill dinosaur similar in appearance to Corythosaurus. Like Corythosaurus, it had a tall, hollow rounded crest, although not as large and straight...	Valid taxon	Barnum Brown Barnum Brown Barnum Brown , a paleontologist born in Carbondale, Kansas, and named after the circus showman P.T. Barnum, discovered the second fossil of Tyrannosaurus rex during a career that made him one of the most famous fossil hunters working from the late Victorian era into the early 20th century.Sponsored...
Procompsognathus Procompsognathus Procompsognathus is a genus of small theropod dinosaur that lived during the late Triassic period , about 210 million years ago. Procompsognathus was named by Eberhard Fraas in 1913. He named the type species, P...	Valid taxon	Eberhard Fraas Eberhard Fraas Eberhard Fraas was a German geologist and paleontologist. He worked as a curator at the Stuttgarter Naturaliensammlung and discovered the dinosaurs of the Tendaguru formation in then German East Africa ....
"Pterospondylus Pterospondylus Pterospondylus is a dubious genus of theropod dinosaur from the Late Triassic. It was a coelophysoid theropod which lived in what is now Germany . The type species, Pterospondylus trielbae, was described by Jaekel in 1913-14 for a single back vertebra... "	Disputed.	Jaekel		Possible junior synonym of Procompsognathus Procompsognathus Procompsognathus is a genus of small theropod dinosaur that lived during the late Triassic period , about 210 million years ago. Procompsognathus was named by Eberhard Fraas in 1913. He named the type species, P... .
Styracosaurus Styracosaurus Styracosaurus was a genus of herbivorous ceratopsian dinosaur from the Cretaceous Period , about 76.5 to 75.0 million years ago...	Valid taxon	Lawrence Lambe Lawrence Lambe Lawrence Morris Lambe was a Canadian geologist and palaeontologist from the Geological Survey of Canada .His published work, describing the diverse and plentiful dinosaur discoveries from the fossil beds in Alberta, did much to bring dinosaurs into the public eye and helped usher in the Golden...
Thescelosaurus Thescelosaurus Thescelosaurus was a genus of small ornithopod dinosaur that appeared at the very end of the Late Cretaceous period in North America. It was a member of the last dinosaurian fauna before the Cretaceous-Tertiary extinction event around 65.5 million years ago...	Valid taxon	Charles W. Gilmore Charles W. Gilmore Charles Whitney Gilmore was an American paleontologist, who named dinosaurs in North America and Mongolia, including the Cretaceous sauropod Alamosaurus, Alectrosaurus, Archaeornithomimus, Bactrosaurus, Brachyceratops, Chirostenotes, Mongolosaurus, Parrosaurus, Pinacosaurus, Styracosaurus and...

New taxa

Non-mammalian