The early expression of squamosal horns and parietal ornamentation confirmed by new end-stage juvenilePachycephalosaurusfossils from the Upper Cretaceous Hell Creek Formation, Montana

Pachycephalosaurid (Dinosauria: Ornithischia) cranial remains from the latest Cretaceous (Maastrichtian) Scollard Formation of Alberta, Canada

(2015) David C. Evans et al.   Palaeobiodiversity and Palaeoenvironments

Evolutionary trends in Triceratops from the Hell Creek Formation, Montana

(2014) J. B. Scannella et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

A new dromaeosaurid (Dinosauria: Theropoda) with Asian affinities from the latest Cretaceous of North America

(2013) David C. Evans et al.   NATURWISSENSCHAFTEN

The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs

(2013) David C. Evans et al.   Nature Communications

Squamosal ontogeny and variation in the pachycephalosaurian dinosaur Stegoceras validum Lambe, 1902, from the Dinosaur Park Formation, Alberta

(2012) Ryan K. Schott et al.   JOURNAL OF VERTEBRATE PALEONTOLOGY

Ontogeny of the parietal frill of Triceratops: A preliminary histological analysis

(2011) John R. Horner et al.   COMPTES RENDUS PALEVOL

Cranial ornamentation and ontogenetic status ofHomalocephale calathocercos(Ornithischia: Pachycephalosauria) from the Nemegt Formation, Mongolia

(2011) David C. Evans et al.   JOURNAL OF VERTEBRATE PALEONTOLOGY

Dinosaur Census Reveals Abundant Tyrannosaurus and Rare Ontogenetic Stages in the Upper Cretaceous Hell Creek Formation (Maastrichtian), Montana, USA

(2011) John R. Horner et al.   PLoS One

Cranial Ontogeny in Stegoceras validum (Dinosauria: Pachycephalosauria): A Quantitative Model of Pachycephalosaur Dome Growth and Variation

(2011) Ryan K. Schott et al.   PLoS One

Cranial Growth and Variation in Edmontosaurs (Dinosauria: Hadrosauridae): Implications for Latest Cretaceous Megaherbivore Diversity in North America

(2011) Nicolás E. Campione et al.   PLoS One

Texacephale langstoni, a new genus of pachycephalosaurid (Dinosauria: Ornithischia) from the upper Campanian Aguja Formation, southern Texas, USA

(2010) Nicholas R. Longrich et al.   CRETACEOUS RESEARCH

TorosaurusMarsh, 1891, isTriceratopsMarsh, 1889 (Ceratopsidae: Chasmosaurinae): synonymy through ontogeny

(2010) John B. Scannella et al.   JOURNAL OF VERTEBRATE PALEONTOLOGY

Cranial anatomy and systematics of Hypacrosaurus altispinus, and a comparative analysis of skull growth in lambeosaurine hadrosaurids (Dinosauria: Ornithischia)

(2010) DAVID C. EVANS   ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY

Early ontogeny of pachycephalosaurine squamosals as revealed by juvenile specimens from the Hell Creek Formation, eastern Montana

(2009) Thomas E. Williamson et al.   JOURNAL OF VERTEBRATE PALEONTOLOGY

The anatomy and systematics ofColepiocephale lambei(Dinosauria: Pachycephalosauridae)

(2009) Ryan K. Schott et al.   JOURNAL OF VERTEBRATE PALEONTOLOGY

Extreme Cranial Ontogeny in the Upper Cretaceous Dinosaur Pachycephalosaurus

(2009) John R. Horner et al.   PLoS One