Lipka, T. R. (1998). "The Affinities of the Enigmatic Theropods of the Arundel Clay Facies (Aptian), Potomac Formation, Atlantic Coastal Plain of Maryland". En Lucas, S.G.; Kirkland, J.I.; Estep, J.W. Lower and Middle Cretaceous Terrestrial Ecosystems. New Mexico Museum of Natural History and Science. New Mexico Museum of Natural History and Science Bulletin, 14 (Albuquerque). pp. 229–234. OCLC40283894.