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Stokstad, Erik (2007). «SOCIETY OF VERTEBRATE PALEONTOLOGY MEETING: Did Horny Young Dinosaurs Cause Illusion of Separate Species?». Science. 318 (5854). 1236 páginas. PMID18033861. doi:10.1126/science.318.5854.1236
Goodwin, Mark B.; Evans, David C. (2016). «The early expression of squamosal horns and parietal ornamentation confirmed by new end-stage juvenile Pachycephalosaurus fossils from the Upper Cretaceous Hell Creek Formation, Montana». Journal of Vertebrate Paleontology. 36 (2): e1078343. ISSN0272-4634. doi:10.1080/02724634.2016.1078343
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Longrich, NR; Sankey, J; Tanke, D (2010). «Texacephale langstoni, a new genus of pachycephalosaurid (Dinosauria: Ornithischia) from the upper Campanian Aguja Formation, southern Texas, USA». Cretaceous Research. 31 (2): 274–284. doi:10.1016/j.cretres.2009.12.002
Evans, D. C.; Schott, R. K.; Larson, D. W.; Brown, C. M.; Ryan, M. J. (2013). «The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs». Nature Communications. 4. 1828 páginas. Bibcode:2013NatCo...4.1828E. PMID23652016. doi:10.1038/ncomms2749
Longrich, N.R.; Sankey, J.; Tanke, D. (2010). «Texacephale langstoni, a new genus of pachycephalosaurid (Dinosauria: Ornithischia) from the upper Campanian Aguja Formation, southern Texas, USA». Cretaceous Research. 31 (2): 274–284. Bibcode:2010CrRes..31..274L. doi:10.1016/j.cretres.2009.12.002
Stokstad, Erik (2007). «SOCIETY OF VERTEBRATE PALEONTOLOGY MEETING: Did Horny Young Dinosaurs Cause Illusion of Separate Species?». Science. 318 (5854). 1236 páginas. PMID18033861. doi:10.1126/science.318.5854.1236
Evans, D. C.; Schott, R. K.; Larson, D. W.; Brown, C. M.; Ryan, M. J. (2013). «The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs». Nature Communications. 4. 1828 páginas. Bibcode:2013NatCo...4.1828E. PMID23652016. doi:10.1038/ncomms2749
Horner J.R. and Goodwin, M.B. (2009). "Extreme cranial ontogeny in the Upper Cretaceous Dinosaur Pachycephalosaurus." PLoS ONE, 4(10): e7626. Online full textArquivado em 2011-05-01 no Wayback Machine
Erik Stokstad,"SOCIETY OF VERTEBRATE PALEONTOLOGY MEETING: Did Horny Young Dinosaurs Cause Illusion of Separate Species?", Science Vol. 18, November 23, 2007, p. 1236; http://www.sciencemag.org/cgi/content/full/318/5854/1236
Horner J.R. and Goodwin, M.B. (2009). "Extreme cranial ontogeny in the Upper Cretaceous Dinosaur Pachycephalosaurus." PLoS ONE, 4(10): e7626. Online full textArquivado em 2011-05-01 no Wayback Machine
Goodwin, Mark B.; Evans, David C. (2016). «The early expression of squamosal horns and parietal ornamentation confirmed by new end-stage juvenile Pachycephalosaurus fossils from the Upper Cretaceous Hell Creek Formation, Montana». Journal of Vertebrate Paleontology. 36 (2): e1078343. ISSN0272-4634. doi:10.1080/02724634.2016.1078343