DINOSAUR TYPE SPECIMENS A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Frequently Asked Questions Additional References > Agathaumas milo Alamosaurus sanjuanensis Allosaurus medius Anatosaurus annectens [see Claosaurus annectens] Antrodemus valens Archaeornithomimus affinis [see Ornithomimus affinis] Arrhinoceratops utahensis Astrodon altus [see Pleurocoelus altus] Astrodon nanus [see Pleurocoelus nanus] > Agathaumas milo - Cope 1874   Catalogue: USNM 244537 Material: partial tibia (shin bone) and sacrum Classification: Ornithischia, Ornithopoda, Hadrosauridae Place: Denver Formation, along the South Platte River, Colorado, USA Time: Maastrichtian, Late Cretaceous Original Publication: E. D. Cope. 1874. Bulletin of the U.S. Geologic and Geographic Survey of the Territories 1:9-28 Other References: Hatcher, Marsh & Lull, 1907 Edward Drinker Cope named this genus and species in 1874 but never properly described it. This name is therefore considered to be a nomen dubium (doubtful name). Hatcher, Marsh, & Lull re-published this material in 1907 as Hadrosaurus occidentalis(a duckbill dinosaur), and it is now catalogued under that name. It probably represents an indeterminate hadrosaur. The name Agathaumas (whose original type species was A. sylvestris) was first applied to a ceratopsian (horned dinosaur), and the genus now considered to be a junior synonym of Triceratops.
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