(en) Mark B. Goodwin et David C. Evans, « 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, vol. 36, no 2, , e1078343 (ISSN0272-4634, DOI10.1080/02724634.2016.1078343)
(en) D. C. Evans, R. K. Schott, D. W. Larson, C. M. Brown et M. J. Ryan, « The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs », Nature Communications, vol. 4, , p. 1828 (PMID23652016, DOI10.1038/ncomms2749, Bibcode2013NatCo...4.1828E)
harvard.edu
ui.adsabs.harvard.edu
(en) D. C. Evans, R. K. Schott, D. W. Larson, C. M. Brown et M. J. Ryan, « The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs », Nature Communications, vol. 4, , p. 1828 (PMID23652016, DOI10.1038/ncomms2749, Bibcode2013NatCo...4.1828E)
issn.org
portal.issn.org
(en) Mark B. Goodwin et David C. Evans, « 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, vol. 36, no 2, , e1078343 (ISSN0272-4634, DOI10.1080/02724634.2016.1078343)
nih.gov
ncbi.nlm.nih.gov
(en) D. C. Evans, R. K. Schott, D. W. Larson, C. M. Brown et M. J. Ryan, « The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs », Nature Communications, vol. 4, , p. 1828 (PMID23652016, DOI10.1038/ncomms2749, Bibcode2013NatCo...4.1828E)