Revised diagnoses of Hadrosaurus foulkii Leidy, 1858 (the type genus and species of Hadrosauridae Cope, 1869) and Claosaurus agilis Marsh, 1872 (Dinosauria: Ornithopoda) from the Late Cretaceous of North America Author Prieto-Márquez, Albert text Zootaxa 2011 2011-02-15 2765 1 61 68 https://biotaxa.org/Zootaxa/article/view/zootaxa.2765.1.6 journal article 10.11646/zootaxa.2765.1.6 1175-5326 5290957 Hadrosaurus Leidy, 1858 Type and only species : Hadrosaurus foulkii Leidy, 1858 Diagnosis. The same as for species.