Nicholas R. Longrich, « Titanoceratops ouranos, a giant horned dinosaur from the late Campanian of New Mexico », Cretaceous Research, vol. 32, no 3, , p. 264–276 (ISSN0195-6671, DOI10.1016/j.cretres.2010.12.007, lire en ligne, consulté le )
(en) Jordan C. Mallon, Christopher J. Ott, Peter L. Larson, Edward M. Iuliano and David C. Evans, « Spiclypeus shipporumgen. et sp. nov., a Boldly Audacious New Chasmosaurine Ceratopsid (Dinosauria: Ornithischia) from the Judith River Formation (Upper Cretaceous: Campanian) of Montana, USA », PLoS ONE, vol. 11, no 5, , e0154218 (DOI10.1371/journal.pone.0154218)
(en) N. R. Longrich, « The horned dinosaurs Pentaceratops and Kosmoceratops from the upper Campanian of Alberta and implications for dinosaur biogeography », Cretaceous Research, vol. 51, , p. 292 (DOI10.1016/j.cretres.2014.06.011)
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Nicholas R. Longrich, « Titanoceratops ouranos, a giant horned dinosaur from the late Campanian of New Mexico », Cretaceous Research, vol. 32, no 3, , p. 264–276 (ISSN0195-6671, DOI10.1016/j.cretres.2010.12.007, lire en ligne, consulté le )