Ryan, Michael J.; Evans, David C. (2005). "Ornithischian Dinosaurs". In Currie, Phillip J.; Koppelhus, Eva (eds.). Dinosaur Provincial Park: A Spectacular Ancient Ecosystem Revealed. Bloomington: Indiana University Press. pp. 312–348. ISBN0-253-34595-2.
Arbour, V.M., V. M.; Burns, M. E.; Sissons, R. L. (2009). "A redescription of the ankylosaurid dinosaur Dyoplosaurus acutosquameus Parks, 1924 (Ornithischia: Ankylosauria) and a revision of the genus". Journal of Vertebrate Paleontology. 29 (4): 1117–1135. Bibcode:2009JVPal..29.1117A. doi:10.1671/039.029.0405. S2CID85665879.
Ryan, M.J.; A.P. Russell (2005). "A new centrosaurine ceratopsid from the Oldman Formation of Alberta and its implications for centrosaurine taxonomy and systematics". Canadian Journal of Earth Sciences. 42 (7): 1369–1387. Bibcode:2005CaJES..42.1369R. doi:10.1139/e05-029. hdl:1880/47001. S2CID128478038.
Kentaro Chiba; Michael J. Ryan; Federico Fanti; Mark A. Loewen; David C. Evans (2018). "New material and systematic re-evaluation of Medusaceratops lokii (Dinosauria, Ceratopsidae) from the Judith River Formation (Campanian, Montana)". Journal of Paleontology. 92 (2): 272–288. Bibcode:2018JPal...92..272C. doi:10.1017/jpa.2017.62. S2CID134031275.
Rogers, R. R. (1990). "Taphonomy of three dinosaur bone beds in the Upper Cretaceous Two Medicine Formation, northwestern Montana: Evidence for drought-related mortality". PALAIOS. 5 (5). SEPM Society for Sedimentary Geology: 394–41. Bibcode:1990Palai...5..394R. doi:10.2307/3514834. JSTOR3514834.
Ekhtiari, S.; Chiba, K.; Popovic, S.; Crowther, R.; Wohl, G.; Wong, A. K. O.; Tanke, D. H.; Dufault, D. M.; Geen, O. D.; Parasu, N.; Crowther, M. A.; Evans, D. C. (2020). "First case of osteosarcoma in a dinosaur: a multimodal diagnosis". The Lancet Oncology. 21 (8): 1021−1022. doi:10.1016/S1470-2045(20)30171-6. PMID32758461. S2CID225473251.
Ryan, M.J.; A.P. Russell (2005). "A new centrosaurine ceratopsid from the Oldman Formation of Alberta and its implications for centrosaurine taxonomy and systematics". Canadian Journal of Earth Sciences. 42 (7): 1369–1387. Bibcode:2005CaJES..42.1369R. doi:10.1139/e05-029. hdl:1880/47001. S2CID128478038.
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Arbour, V.M., V. M.; Burns, M. E.; Sissons, R. L. (2009). "A redescription of the ankylosaurid dinosaur Dyoplosaurus acutosquameus Parks, 1924 (Ornithischia: Ankylosauria) and a revision of the genus". Journal of Vertebrate Paleontology. 29 (4): 1117–1135. Bibcode:2009JVPal..29.1117A. doi:10.1671/039.029.0405. S2CID85665879.
Ryan, M.J.; A.P. Russell (2005). "A new centrosaurine ceratopsid from the Oldman Formation of Alberta and its implications for centrosaurine taxonomy and systematics". Canadian Journal of Earth Sciences. 42 (7): 1369–1387. Bibcode:2005CaJES..42.1369R. doi:10.1139/e05-029. hdl:1880/47001. S2CID128478038.
Kentaro Chiba; Michael J. Ryan; Federico Fanti; Mark A. Loewen; David C. Evans (2018). "New material and systematic re-evaluation of Medusaceratops lokii (Dinosauria, Ceratopsidae) from the Judith River Formation (Campanian, Montana)". Journal of Paleontology. 92 (2): 272–288. Bibcode:2018JPal...92..272C. doi:10.1017/jpa.2017.62. S2CID134031275.
Rogers, R. R. (1990). "Taphonomy of three dinosaur bone beds in the Upper Cretaceous Two Medicine Formation, northwestern Montana: Evidence for drought-related mortality". PALAIOS. 5 (5). SEPM Society for Sedimentary Geology: 394–41. Bibcode:1990Palai...5..394R. doi:10.2307/3514834. JSTOR3514834.
Rogers, R. R. (1990). "Taphonomy of three dinosaur bone beds in the Upper Cretaceous Two Medicine Formation, northwestern Montana: Evidence for drought-related mortality". PALAIOS. 5 (5). SEPM Society for Sedimentary Geology: 394–41. Bibcode:1990Palai...5..394R. doi:10.2307/3514834. JSTOR3514834.
Ekhtiari, S.; Chiba, K.; Popovic, S.; Crowther, R.; Wohl, G.; Wong, A. K. O.; Tanke, D. H.; Dufault, D. M.; Geen, O. D.; Parasu, N.; Crowther, M. A.; Evans, D. C. (2020). "First case of osteosarcoma in a dinosaur: a multimodal diagnosis". The Lancet Oncology. 21 (8): 1021−1022. doi:10.1016/S1470-2045(20)30171-6. PMID32758461. S2CID225473251.
Arbour, V.M., V. M.; Burns, M. E.; Sissons, R. L. (2009). "A redescription of the ankylosaurid dinosaur Dyoplosaurus acutosquameus Parks, 1924 (Ornithischia: Ankylosauria) and a revision of the genus". Journal of Vertebrate Paleontology. 29 (4): 1117–1135. Bibcode:2009JVPal..29.1117A. doi:10.1671/039.029.0405. S2CID85665879.
Ryan, M.J.; A.P. Russell (2005). "A new centrosaurine ceratopsid from the Oldman Formation of Alberta and its implications for centrosaurine taxonomy and systematics". Canadian Journal of Earth Sciences. 42 (7): 1369–1387. Bibcode:2005CaJES..42.1369R. doi:10.1139/e05-029. hdl:1880/47001. S2CID128478038.
Kentaro Chiba; Michael J. Ryan; Federico Fanti; Mark A. Loewen; David C. Evans (2018). "New material and systematic re-evaluation of Medusaceratops lokii (Dinosauria, Ceratopsidae) from the Judith River Formation (Campanian, Montana)". Journal of Paleontology. 92 (2): 272–288. Bibcode:2018JPal...92..272C. doi:10.1017/jpa.2017.62. S2CID134031275.
Ekhtiari, S.; Chiba, K.; Popovic, S.; Crowther, R.; Wohl, G.; Wong, A. K. O.; Tanke, D. H.; Dufault, D. M.; Geen, O. D.; Parasu, N.; Crowther, M. A.; Evans, D. C. (2020). "First case of osteosarcoma in a dinosaur: a multimodal diagnosis". The Lancet Oncology. 21 (8): 1021−1022. doi:10.1016/S1470-2045(20)30171-6. PMID32758461. S2CID225473251.