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

M. B. Goodwin, and D. C. Evans

2016

Article

Journal of Vertebrate Paleontology 36(2):e1078343:1-8

Find it at:

http://dx.doi.org/10.1080/02724634.2016.1078343