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 Camptosaurus browni Camptosaurus depressus Camptosaurus nanus “Capitalsaurus” [see Creosaurus potens] Ceratops alticornis [see Triceratops alticornis] Ceratops montanus Ceratops paucidens [see Hadrosaurus paucidens] Ceratosaurus nasicornis Chassternbergia rugosidens [see Palaeoscincus rugosidens] Claosaurus annectens Coelurus gracilis > Creosaurus potens > Creosaurus potens - Lull 1911   Catalogue: USNM 3049 Material: caudal (tail) vertebra Classification: Saurischia, Theropoda Collected: J. K. Murphy, late 1800s Place: Arundel Formation, Washington, D.C., USA Time: Aptian, Early Cretaceous Original Publication: R. S. Lull. 1911. Maryland Geological Survey Stratigraphic Series: Lower Cretaceous:173-178 Other References: Gilmore, 1920 This species of theropod has the unique distinction of being discovered underneath the nations’s capital! It was found in downtown Washington, D.C. in the late 1800’s during an excavation for a sewer line. It is presumed to be from the Arundel Formation (Early Cretaceous Period). The type material consists only of the centrum (base) part of a vertebra of what is now considered to be either an indeterminate theropod, or some form of saurischian dinosaur. Unfortunately this specimen was used to try and name a new genus, “Capitalsaurus”, in honor of the nations’s capital. This is not scientifically justified and the name “Capitalsaurus” has no validity.
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