Video Upload Options

References

1. Carpenter, K. (2006). "Bison" alticornis and O.C. Marsh's early views on ceratopsians". in Carpenter, K.. Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs. Bloomington and Indianapolis: Indiana University Press. pp. 349–364. ISBN 978-0-253-34817-3. 
2. Marsh, O.C. (1887). "Notice of new fossil mammals". American Journal of Science 34 (202): 323–331. doi:10.2475/ajs.s3-34.202.323. Bibcode: 1887AmJS...34..323M. http://ajs.library.cmu.edu/books/pages.cgi?call=AJS_1887_034_1887&layout=vol0/part0/copy0&file=00000332. Retrieved October 19, 2021. 
3. Marsh, O.C. (1888). "A new family of horned Dinosauria, from the Cretaceous". American Journal of Science 36 (216): 477–478. doi:10.2475/ajs.s3-36.216.477. Bibcode: 1888AmJS...36..477M. http://ajs.library.cmu.edu/books/pages.cgi?call=AJS_1888_036_1888&layout=vol0/part0/copy0&file=00000493. Retrieved October 19, 2021. 
4. Cope, E.D. (1872). "On the existence of Dinosauria in the Transition Beds of Wyoming". Proceedings of the American Philosophical Society. 12: 481–483.
5. Cope, E.D. (1874). Report on the stratigraphy and Pliocene vertebrate paleontology of northern Colorado. Bulletin of the U.S. Geological and Geographical Survey of the Territories. 9:9-28.
6. Lull, R. S., & Wright, N. E. (1942). Hadrosaurian dinosaurs of North America(Vol. 40). Geological Society of America.
7. Dodson, P. (1996). The Horned Dinosaurs. Princeton, New Jersey: Princeton University Press. ISBN 978-0-691-02882-8. https://archive.org/details/horneddinosaursn00dods_0. 
8. Lull, R. S. (1933). "A revision of the Ceratopsia or horned dinosaurs". Memoirs of the Peabody Museum of Natural History 3 (3): 1–175. doi:10.5962/bhl.title.5716. https://archive.org/details/revisionofcerato33lull. Retrieved November 20, 2010. 
9. "Division of Paleontology". http://research.amnh.org/paleontology/search.php?action=detail&specimen_id=46569. 
10. Dodson, P., Forster, C.A., and Sampson, S.D. (2004). Ceratopsidae. In: Weishampel, D.B., Dodson, P., and Osmólska, H. (eds.). The Dinosauria (second edition). University of California Press:Berkeley, 494-513. ISBN 0-520-24209-2.
11. Marsh, O.C. (1889a). "Notice of new American Dinosauria". American Journal of Science 37 (220): 331–336. doi:10.2475/ajs.s3-37.220.331. Bibcode: 1889AmJS...37..331M. http://ajs.library.cmu.edu/books/pages.cgi?call=AJS_1889_037_1889&layout=vol0/part0/copy0&file=00000339. Retrieved October 19, 2021. 
12. Marsh, O.C. (1889b). "Notice of gigantic horned Dinosauria from the Cretaceous". American Journal of Science 38 (224): 173–175. doi:10.2475/ajs.s3-38.224.173. Bibcode: 1889AmJS...38..173M. http://ajs.library.cmu.edu/books/pages.cgi?call=AJS_1889_038_1889&layout=vol0/part0/copy0&file=00000183. Retrieved October 19, 2021. 
13. Hatcher, J. B.; Marsh, O. C.; Lull, R. S. (1907). The Ceratopsia. Washington, D.C.: Government Printing Office. ISBN 978-0-405-12713-7. 
14. Breithaupt, B. H. (1999). "First Discovery of Dinosaurs in the American West". in Gillette, D. D.. Vertebrate Paleontology In Utah. Utah Geological Survey. pp. 59–65. ISBN 978-1-55791-634-1. 
15. Goussard, Florent (2006). "The skull of Triceratops in the palaeontology gallery, Muséum national d'Histoire naturelle, Paris". Geodiversitas 28 (3): 467–476. https://www.researchgate.net/publication/242181069. Retrieved December 22, 2017. 
16. Sternberg, C. M. (1949). "The Edmonton fauna and description of a new Triceratops from the Upper Edmonton member; phylogeny of the Ceratopsidae". National Museum of Canada Bulletin 113: 33–46. 
17. Ostrom, J. H.; Wellnhofer, P. (1986). "The Munich specimen of Triceratops with a revision of the genus". Zitteliana 14: 111–158. 
18. Lehman, T. M. (1990). "The ceratopsian subfamily Chasmosaurinae: sexual dimorphism and systematics". in Carpenter, K.; Currie, P. J.. Dinosaur Systematics: Perspectives and Approaches. Cambridge: Cambridge University Press. pp. 211–229. ISBN 978-0-521-36672-4. 
19. Forster, C.A. (1996). "Species resolution in Triceratops: cladistic and morphometric approaches". Journal of Vertebrate Paleontology 16 (2): 259–270. doi:10.1080/02724634.1996.10011313.  https://dx.doi.org/10.1080%2F02724634.1996.10011313
20. Lehman, T. M. (1998). "A gigantic skull and skeleton of the horned dinosaur Pentaceratops sternbergi from New Mexico". Journal of Paleontology 72 (5): 894–906. doi:10.1017/S0022336000027220.  https://dx.doi.org/10.1017%2FS0022336000027220
21. null
22. Alexander, R.M. (1985). "Mechanics of posture and gait of some large dinosaurs". Zoological Journal of the Linnean Society 83: 1–25. doi:10.1111/j.1096-3642.1985.tb00871.x.  https://dx.doi.org/10.1111%2Fj.1096-3642.1985.tb00871.x
23. Seebacher, F. (2001). "A new method to calculate allometric length-mass relationships of dinosaurs". Journal of Vertebrate Paleontology 21 (1): 51–60. doi:10.1671/0272-4634(2001)021[0051:ANMTCA2.0.CO;2]. https://dinoweb.ucoz.ru/_fr/4/A_new_method_to.pdf. 
24. Paul, G. S. (2010). The Princeton Field Guide to Dinosaurs. Princeton University Press. pp. 265–267. ISBN 978-0-691-13720-9. https://archive.org/details/princetonfieldgu0000paul/page/265. 
25. Holtz, Thomas R. Jr. (2012). Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages. http://www.geol.umd.edu/~tholtz/dinoappendix/HoltzappendixWinter2011.pdf. "Winter 2011 Appendix" 
26. "A Triceratops Named 'Kelsey'". https://www.bhigr.com/pages/info/info_klsy.htm. 
27. "Kesley the Triceratops". http://www.bhigr.com/media/zooms/zoomFlash.php?path=kelsey_skeleton-display-poster. 
28. Scannella, J.; Horner, J.R. (2010). "Torosaurus Marsh, 1891, is Triceratops Marsh, 1889 (Ceratopsidae: Chasmosaurinae): synonymy through ontogeny". Journal of Vertebrate Paleontology 30 (4): 1157–1168. doi:10.1080/02724634.2010.483632.  https://dx.doi.org/10.1080%2F02724634.2010.483632
29. Lambert, D. (1993). The Ultimate Dinosaur Book. Dorling Kindersley, New York. pp. 152–167. ISBN 978-1-56458-304-8. https://archive.org/details/ultimatedinosaur00lamb/page/152. 
30. Dodson, P.; Forster, C. A.; Sampson, S. D. (2004). "Ceratopsidae". in Weishampel, D. B.; Dodson, P.; Osmólska, H.. The Dinosauria (second ed.). Berkeley: University of California Press. pp. 494–513. ISBN 978-0-520-24209-8. 
31. "Denver museum unveils 7-foot-long, 1,000-pound Triceratops skull". The Daily Courier. November 18, 2003. https://news.google.com/newspapers?nid=894&dat=20031118&id=OCNTAAAAIBAJ&pg=6720,2967799. 
32. Scannella, John B.; Fowler, Denver W.; Goodwin, Mark B.; Horner, John R. (July 15, 2014). "Evolutionary trends in Triceratops from the Hell Creek Formation, Montana" (in en). Proceedings of the National Academy of Sciences 111 (28): 10245–10250. doi:10.1073/pnas.1313334111. ISSN 0027-8424. PMID 24982159. Bibcode: 2014PNAS..11110245S.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4104892
33. "Making A Triceratops. Science Supplies Missing Part! Of Skeleton". Boston Evening Transcript. October 24, 1901. https://news.google.com/newspapers?nid=2249&dat=19011024&id=U5I-AAAAIBAJ&pg=5758,3411357. 
34. Fujiwara, Shin-Ichi (December 12, 2009). "A reevaluation of the manus structure in Triceratops (Ceratopsia: Ceratopsidae)". Journal of Vertebrate Paleontology 29 (4): 1136–1147. doi:10.1671/039.029.0406. ISSN 0272-4634.  https://dx.doi.org/10.1671%2F039.029.0406
35. Christiansen, P.; Paul, G.S. (2001). "Limb bone scaling, limb proportions, and bone strength in neoceratopsian dinosaurs". Gaia 16: 13–29. http://gspauldino.com/GaiaNeoceratopsian.pdf. Retrieved October 29, 2012. 
36. Thompson, S.; Holmes, R. (2007). "Forelimb stance and step cycle in Chasmosaurus irvinensis (Dinosauria: Neoceratopsia)". Palaeontologia Electronica 10 (1): 17 p. http://palaeo-electronica.org/2007_1/step/index.html. Retrieved November 20, 2010. 
37. Rega, E.; Holmes, R.; Tirabasso, A. (2010). "Habitual locomotor behavior inferred from manual pathology in two Late Cretaceous chasmosaurine ceratopsid dinosaurs, Chasmosaurus irvinensis (CMN 41357) and Chasmosaurus belli (ROM 843)". in Ryan, Michael J.; Chinnery-Allgeier, Brenda J.; Eberth, David A.. New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Bloomington and Indianapolis: Indiana University Press. pp. 340–354. ISBN 978-0-253-35358-0. 
38. Martin, Anthony J. (2006). Introduction to the study of dinosaurs (2nd ed.). Malden, MA: Blackwell Pub. ISBN 978-1405134132. OCLC 61130756.  http://www.worldcat.org/oclc/61130756
39. Witton, Mark (December 24, 2015). "Mark Witton.com Blog: Dinosaur scales: some thoughts for artists". http://markwitton-com.blogspot.com/2015/12/dinosaur-scales-some-thoughts-for.html. 
40. "What is special about the Triceratops?". Dinosaurios.org. July 24, 2013. http://dinosaurios.org/triceratops/. 
41. Lambe, L.M. (1915). "On Eoceratops canadensis, gen. nov., with remarks on other genera of Cretaceous horned dinosaurs". Canada Department of Mines Geological Survey Museum Bulletin 12: 1–49. ISBN 978-0-665-82611-5. http://isbndb.com/d/book/on_eoceratops_canadensis_gen_nov_with_remarks_on_other_gener.html. 
42. Ostrom, J. H. (1966). "Functional morphology and evolution of the ceratopsian dinosaurs". Evolution 20 (3): 290–308. doi:10.2307/2406631. PMID 28562975.  https://dx.doi.org/10.2307%2F2406631
43. Norman, David (1985). The Illustrated Encyclopaedia of Dinosaurs. London: Salamander Books. ISBN 978-0-517-46890-6. 
44. Dodson, P.; Currie, P. J. (1990). "Neoceratopsia". in Weishampel, D. B.; Dodson, P.; Osmólska, H.. The Dinosauria. Berkeley: University of California Press. pp. 593–618. ISBN 978-0-520-06727-1. 
45. Dodson, P. (1993). "Comparative craniology of the Ceratopsia". American Journal of Science 293: 200–234. doi:10.2475/ajs.293.A.200. Bibcode: 1993AmJS..293..200D. http://earth.geology.yale.edu/~ajs/1993/11.1993.07Dodson.pdf. Retrieved January 21, 2007. 
46. Longrich, N. R. (2014). "The horned dinosaurs Pentaceratops and Kosmoceratops from the upper Campanian of Alberta and implications for dinosaur biogeography". Cretaceous Research 51: 292–308. doi:10.1016/j.cretres.2014.06.011.  https://dx.doi.org/10.1016%2Fj.cretres.2014.06.011
47. Gauthier, J. A. (1986). "Saurischian monophyly and the origin of birds. The Origin of Birds and the Evolution of Flight, K. Padian (ed.)". Memoirs of the California Academy of Sciences 8: 1–55. 
48. Sereno, P. C. (1998). "A rationale for phylogenetic definitions, with application to the higher-level taxonomy of Dinosauria". Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 210 (1): 41–83. doi:10.1127/njgpa/210/1998/41.  https://dx.doi.org/10.1127%2Fnjgpa%2F210%2F1998%2F41
49. Mathews, Joshua C.; Brusatte, Stephen L.; Williams, Scott A.; Henderson, Michael D. (2009). "The first Triceratops bonebed and its implications for gregarious behavior". Journal of Vertebrate Paleontology 29 (1): 286–290. doi:10.1080/02724634.2009.10010382.  https://dx.doi.org/10.1080%2F02724634.2009.10010382
50. Smith, Matt (June 4, 2013). "Triceratops trio unearthed in Wyoming – CNN". CNN. http://www.cnn.com/2013/06/03/us/triceratops-found/index.html. 
51. Illies, M. M. Canoy; Fowler, D. W. (2020). "Triceratops with a kink: Co-ossification of five distal caudal vertebrae from the Hell Creek Formation of North Dakota". Cretaceous Research 108: 104355. doi:10.1016/j.cretres.2019.104355.  https://dx.doi.org/10.1016%2Fj.cretres.2019.104355
52. Barrera, Nathanial A. (January 9, 2020). "More than old bones: New study sheds light on Triceratops behavior and living habits" (in en). The Dickinson Press. https://www.thedickinsonpress.com/incoming/4858206-More-than-old-bones-New-study-sheds-light-on-Triceratops-behavior-and-living-habits. 
53. Erickson, B. R. (1966). "Mounted skeleton of Triceratops prorsus in the Science Museum". Scientific Publications of the Science Museum 1: 1–16. 
54. Bakker, R. T. (1986). The Dinosaur Heresies: New Theories Unlocking The Mystery of the Dinosaurs and Their Extinction. New York: William Morrow. p. 438. ISBN 978-0-14-010055-6. https://archive.org/details/dinosaurheresies00robe. 
55. Derstler, K. (1994). "Dinosaurs of the Lance Formation in eastern Wyoming". in Nelson, G. E.. The Dinosaurs of Wyoming. Wyoming Geological Association Guidebook, 44th Annual Field Conference. Wyoming Geological Association. pp. 127–146. 
56. Sakagami, Rina; Kawabe, Soichiro (2020). "Endocranial anatomy of the ceratopsid dinosaur Triceratops and interpretations of sensory and motor function". PeerJ 8: e9888. doi:10.7717/peerj.9888. PMID 32999761. PMC 7505063. https://peerj.com/articles/9888/. Retrieved September 18, 2020. 
57. Wiemann, J.; Menéndez, I.; Crawford, J.M.; Fabbri, M.; Gauthier, J.A.; Hull, P.M.; Norell, M.A.; Briggs, D.E.G. (2022). "Fossil biomolecules reveal an avian metabolism in the ancestral dinosaur". Nature 606 (7914): 522–526. doi:10.1038/s41586-022-04770-6. PMID 35614213.  https://dx.doi.org/10.1038%2Fs41586-022-04770-6
58. Tait, J.; Brown, B. (1928). "How the Ceratopsia carried and used their head". Transactions of the Royal Society of Canada 22: 13–23. 
59. Ostrom, J. H. (1964). "A functional analysis of jaw mechanics in the dinosaur Triceratops". Postilla 88: 1–35. http://www.peabody.yale.edu/scipubs/bulletins_postillas/ypmP088_1964.pdf. Retrieved November 20, 2010. 
60. Weishampel, D. B. (1984). Evolution of jaw mechanisms in ornithopod dinosaurs. Advances in Anatomy Embryology and Cell Biology. 87. pp. 1–110. doi:10.1007/978-3-642-69533-9. ISBN 978-3-540-13114-4.  https://dx.doi.org/10.1007%2F978-3-642-69533-9
61. Coe, M. J.; Dilcher, D. L.; Farlow, J. O.; Jarzen, D. M.; Russell, D. A. (1987). "Dinosaurs and land plants". in Friis, E. M.; Chaloner, W. G.; Crane, P. R.. The Origins of Angiosperms and their Biological Consequences. Cambridge University Press. pp. 225–258. ISBN 978-0-521-32357-4. 
62. Lull, R. S. (1908). "The cranial musculature and the origin of the frill in the ceratopsian dinosaurs". American Journal of Science 4 (25): 387–399. doi:10.2475/ajs.s4-25.149.387. Bibcode: 1908AmJS...25..387L. https://zenodo.org/record/1450156. Retrieved June 12, 2019. 
63. Lua error: Internal error: The interpreter exited with status 1.
64. Sternberg, C. H. (1917). Hunting Dinosaurs in the Badlands of the Red Deer River, Alberta, Canada. San Diego, California. pp. 261. 
65. Happ, J. (2008). "An analysis of predator-prey behavior in a head-to-head encounter between Tyrannosaurus rex and Triceratops". in Larson, P.; Carpenter, K.. Tyrannosaurus rex, the Tyrant King (Life of the Past). Bloomington: Indiana University Press. pp. 355–368. ISBN 978-0-253-35087-9. 
66. Erickson, Gregory M.; Olson, Kenneth H. (March 19, 1996). "Bite marks attributable to Tyrannosaurus rex: Preliminary description and implications". Journal of Vertebrate Paleontology 16 (1): 175–178. doi:10.1080/02724634.1996.10011297. ISSN 0272-4634. https://zenodo.org/record/3732430. Retrieved June 3, 2020. 
67. Farke, A. A. (2004). "Horn Use in Triceratops (Dinosauria: Ceratopsidae): Testing Behavioral Hypotheses Using Scale Models". Palaeo-electronica 7 (1): 1–10. http://www.nhm.ac.uk/hosted_sites/pe/2004_1/horn/horn.pdf. Retrieved November 20, 2010. 
68. Tanke, D. H.; Farke, A. A. (2006). "Bone resorption, bone lesions, and extracranial fenestrae in ceratopsid dinosaurs: a preliminary assessment". in Carpenter, K.. Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs. Bloomington: Indiana University Press. pp. 319–347. ISBN 978-0-253-34817-3. 
69. Farke, A.A.; Wolff, E.D.S.; Tanke, D.H.; Sereno, Paul (2009). Sereno, Paul. ed. "Evidence of Combat in Triceratops". PLOS ONE 4 (1): e4252. doi:10.1371/journal.pone.0004252. PMID 19172995. Bibcode: 2009PLoSO...4.4252F.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2617760
70. Peterson, JE; Dischler, C; Longrich, NR (2013). "Distributions of Cranial Pathologies Provide Evidence for Head-Butting in Dome-Headed Dinosaurs (Pachycephalosauridae)". PLOS ONE 8 (7): e68620. doi:10.1371/journal.pone.0068620. PMID 23874691. Bibcode: 2013PLoSO...868620P.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3712952
71. Wall, Michael (January 27, 2009). "Scars Reveal How Triceratops Fought –". Wired. https://www.wired.com/wiredscience/2009/01/dinofight/. Retrieved August 3, 2010. 
72. Reid, R.E.H. (1997). "Histology of bones and teeth". in Currie, P. J.; Padian, K.. Encyclopedia of Dinosaurs. San Diego, CA.: Academic Press. pp. 329–339. 
73. Horner, JR; Goodwin, MB (2009). "Extreme Cranial Ontogeny in the Upper Cretaceous Dinosaur Pachycephalosaurus". PLOS ONE 4 (10): e7626. doi:10.1371/journal.pone.0007626. PMID 19859556. Bibcode: 2009PLoSO...4.7626H.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2762616
74. Horner, JR; Lamm, E (2011). "Ontogeny of the parietal frill of Triceratops: a preliminary histological analysis". Comptes Rendus Palevol 10 (5–6): 439–452. doi:10.1016/j.crpv.2011.04.006.  https://dx.doi.org/10.1016%2Fj.crpv.2011.04.006
75. Farlow, J. O.; Dodson, P. (1975). "The behavioral significance of frill and horn morphology in ceratopsian dinosaurs". Evolution 29 (2): 353–361. doi:10.2307/2407222. PMID 28555861.  https://dx.doi.org/10.2307%2F2407222
76. Martin, A. J. (2006). Introduction to the Study of Dinosaurs (Second ed.). Oxford: Blackwell Publishing. pp. 299–300. ISBN 978-1-4051-3413-2. 
77. D’Anastasio, Ruggero; Cilli, Jacopo; Bacchia, Flavio; Fanti, Federico; Gobbo, Giacomo; Capasso, Luigi (April 7, 2022). "Histological and chemical diagnosis of a combat lesion in Triceratops" (in en). Scientific Reports 12 (1): 3941. doi:10.1038/s41598-022-08033-2. ISSN 2045-2322. PMID 35393445. Bibcode: 2022NatSR..12.3941D.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=8990019
78. Wheeler, P.E. (1978). "Elaborate CNS cooling structures in large dinosaurs". Nature 275 (5679): 441–443. doi:10.1038/275441a0. PMID 692723. Bibcode: 1978Natur.275..441W.  https://dx.doi.org/10.1038%2F275441a0
79. Farlow, J. O.; Thompson, C. V.; Rosner, D. E. (1976). "Plates of the dinosaur Stegosaurus: Forced convection heat loss fins?". Science 192 (4244): 1123–5. doi:10.1126/science.192.4244.1123. PMID 17748675. Bibcode: 1976Sci...192.1123F.  https://dx.doi.org/10.1126%2Fscience.192.4244.1123
80. Davitashvili, L. Sh. (1961). Teoriya Polovogo Otbora (Theory of Sexual Selection). Izdatel'stvo Akademii nauk SSSR. p. 538. 
81. Farlow, J.O.; Dodson, P. (1975). "The behavioral significance of frill and horn morphology in ceratopsian dinosaurs". Evolution 29 (2): 353–361. doi:10.2307/2407222. PMID 28555861.  https://dx.doi.org/10.2307%2F2407222
82. Goodwin, M.B.; Clemens, W.A.; Horner, J.R.; Padian, K. (2006). "The smallest known Triceratops skull: new observations on ceratopsid cranial anatomy and ontogeny". Journal of Vertebrate Paleontology 26 (1): 103–112. doi:10.1671/0272-4634(2006)26[103:TSKTSN2.0.CO;2]. ISSN 0272-4634. http://www.ucmp.berkeley.edu/people/mbg/Goodwin_et_al_2006.pdf. Retrieved January 21, 2007. 
83. Hone, D. W. E.; Naish, D. (2013). "The 'species recognition hypothesis' does not explain the presence and evolution of exaggerated structures in non-avialan dinosaurs". Journal of Zoology 290 (3): 172–180. doi:10.1111/jzo.12035.  https://dx.doi.org/10.1111%2Fjzo.12035
84. Horner, J.R.; Goodwin, M.B. (2006). "Major cranial changes during Triceratops ontogeny". Proceedings of the Royal Society B: Biological Sciences 273 (1602): 2757–2761. doi:10.1098/rspb.2006.3643. PMID 17015322.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1635501
85. Farke, A. A. (2006). "Cranial osteology and phylogenetic relationships of the chasmosaurine ceratopsid Torosaurus latus". in Carpenter, K.. Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs. Bloomington: Indiana University Press. pp. 235–257. ISBN 978-0-253-34817-3. 
86. "New Analyses Of Dinosaur Growth May Wipe Out One-third Of Species". Science News. ScienceDaily.com. October 31, 2009. https://www.sciencedaily.com/releases/2009/10/091031002314.htm. 
87. Farke, Andrew A. (2011). Claessens, Leon. ed. "Anatomy and taxonomic status of the chasmosaurine ceratopsid Nedoceratops hatcheri from the Upper Cretaceous Lance Formation of Wyoming, U.S.A". PLOS ONE 6 (1): e16196. doi:10.1371/journal.pone.0016196. PMID 21283763. Bibcode: 2011PLoSO...616196F.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3024410
88. Longrich, Nicholas R.; Field, Daniel J. (February 29, 2012). "Torosaurus Is Not Triceratops: Ontogeny in Chasmosaurine Ceratopsids as a Case Study in Dinosaur Taxonomy". PLOS ONE 7 (2): e32623. doi:10.1371/journal.pone.0032623. ISSN 1932-6203. PMID 22393425. Bibcode: 2012PLoSO...732623L.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3290593
89. Bowdler, Neil (March 1, 2012). "Triceratops and Torosaurus dinosaurs 'two species, not one'" (in en-GB). BBC News. https://www.bbc.co.uk/news/science-environment-17192624. 
90. Scannella, J. B.; Horner, J. R. (2011). Claessens, Leon. ed. "'Nedoceratops': An Example of a Transitional Morphology". PLOS ONE 6 (12): e28705. doi:10.1371/journal.pone.0028705. PMID 22194891. Bibcode: 2011PLoSO...628705S.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3241274
91. Longrich, Nicholas R. (2011). "Titanoceratops ouranous, a giant horned dinosaur from the Late Campanian of New Mexico". Cretaceous Research 32 (3): 264–276. doi:10.1016/j.cretres.2010.12.007.  https://dx.doi.org/10.1016%2Fj.cretres.2010.12.007
92. Weishampel, D.B.; Dodson, Peter; Osmólska, H. (2004). The Dinosauria (Second ed.). Berkeley: University of California Press. pp. 861. ISBN 978-0-520-24209-8. 
93. Husson, D. E.; Galbrun, B.; Laskar, J.; Hinnov, L. A.; Thibault, N.; Gardin, S.; Locklair, R. E. (2011). "Astronomical calibration of the Maastrichtian (Late Cretaceous)". Earth and Planetary Science Letters 305 (3–4): 328–340. doi:10.1016/j.epsl.2011.03.008. Bibcode: 2011E&PSL.305..328H.  https://dx.doi.org/10.1016%2Fj.epsl.2011.03.008
94. Longrich, N. R.; Tokaryk, T.; Field, D. J. (2011). "Mass extinction of birds at the Cretaceous-Paleogene (K-Pg) boundary". Proceedings of the National Academy of Sciences 108 (37): 15253–15257. doi:10.1073/pnas.1110395108. PMID 21914849. Bibcode: 2011PNAS..10815253L.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3174646
95. Lamanna, M. C.; Sues, H. D.; Schachner, E. R.; Lyson, T. R. (2014). "A New Large-Bodied Oviraptorosaurian Theropod Dinosaur from the Latest Cretaceous of Western North America". PLOS ONE 9 (3): e92022. doi:10.1371/journal.pone.0092022. PMID 24647078. Bibcode: 2014PLoSO...992022L.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3960162
96. Evans, D. C.; Larson, D. W.; Currie, P. J. (2013). "A new dromaeosaurid (Dinosauria: Theropoda) with Asian affinities from the latest Cretaceous of North America". Naturwissenschaften 100 (11): 1041–1049. doi:10.1007/s00114-013-1107-5. PMID 24248432. Bibcode: 2013NW....100.1041E.  https://dx.doi.org/10.1007%2Fs00114-013-1107-5
97. Triebold, M. (1997). Wolberg, D.; Stump, E.; Rosenberg, G.. eds. "The Sandy site: Small dinosaurs from the Hell Creek Formation of South Dakota". Dinofest International: Proceedings of a Symposium: 245–248. 
98. Maltese, Anthony (December 17, 2013). "Giant Oviraptor Tracks from the Hell Creek". RMDRC paleo lab. http://rmdrc.blogspot.com/2013/12/giant-oviraptor-tracks-from-hell-creek.html. 
99. Martin, L. D.; Kurochkin, E. N.; Tokaryk, T. T. (2012). "A new evolutionary lineage of diving birds from the Late Cretaceous of North America and Asia". Palaeoworld 21: 59–63. doi:10.1016/j.palwor.2012.02.005.  https://dx.doi.org/10.1016%2Fj.palwor.2012.02.005
100. Ott, C.J.; Larson, P.L. (2010). "A New, Small Ceratopsian Dinosaur from the Latest Cretaceous Hell Creek Formation, Northwest South Dakota, United States: A Preliminary Description". in Ryan, M.J.; Chinnery-Allgeier, B.J.; Eberth, D.A.. New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Bloomington: Indiana University Press. pp. 656. 
101. Campione, N. S. E.; Evans, D. C. (2011). "Cranial Growth and Variation in Edmontosaurs (Dinosauria: Hadrosauridae): Implications for Latest Cretaceous Megaherbivore Diversity in North America". PLOS ONE 6 (9): e25186. doi:10.1371/journal.pone.0025186. PMID 21969872. Bibcode: 2011PLoSO...625186C.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3182183
102. Bakker, R.T.; Sullivan, R.M.; Porter, V.; Larson, P.; Saulsbury, S.J. (2006). Lucas, S.G.; Sullivan, R.M.. eds. "Dracorex hogwartsia, n. gen., n. sp., a spiked, flat-headed pachycephalosaurid dinosaur from the Upper Cretaceous Hell Creek Formation of South Dakota". Late Cretaceous Vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin 35: 331–345. http://econtent.unm.edu/cdm/ref/collection/bulletins/id/710. Retrieved January 6, 2015. 
103. Kielan-Jaworowska, Zofia; Cifelli, Richard L.; Luo, Zhe-Xi (2004). Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure. New York: Columbia University Press. pp. 98–99. ISBN 978-0-231-11918-4. 
104. Wilson, G. P. (2013). "Mammals across the K/Pg boundary in northeastern Montana, U.S.A.: Dental morphology and body-size patterns reveal extinction selectivity and immigrant-fueled ecospace filling". Paleobiology 39 (3): 429–469. doi:10.1666/12041. http://www.bioone.org/doi/pdf/10.4202/app.00117.2014. 
105. Archibald, J. D.; Zhang, Y.; Harper, T.; Cifelli, R. L. (2011). "Protungulatum, Confirmed Cretaceous Occurrence of an Otherwise Paleocene Eutherian (Placental?) Mammal". Journal of Mammalian Evolution 18 (3): 153–161. doi:10.1007/s10914-011-9162-1.  https://dx.doi.org/10.1007%2Fs10914-011-9162-1
106. State of South Dakota. "Signs and Symbols of South Dakota.....". http://www.state.sd.us/state/sdsym.htm. 
107. State of Wyoming. "State of Wyoming – General Information". http://wyoming.gov/general/general.asp. 
108. Bakker, R. T. (1986). The Dinosaur Heresies. New York: Kensington Publishing. p. 240.  On that page, Bakker has his own T. rex/Triceratops fight.