(en) Michael D. D'Emic, Brady Z. Foreman, Nathan A. Jud, Brooks B. Britt, Mark Schmitz, and James L. Crowley "Chronostratigraphic Revision of the Cloverly Formation (Lower Cretaceous, Western Interior, USA)," Bulletin of the Peabody Museum of Natural History 60(1), 3-40, (1 April 2019). https://doi.org/10.3374/014.060.0101
