John R. Horner

Chapman University — United States

Earth and Planetary Sciences · Physical Sciences

57h-index9.4kcitations154works3.02yr avg
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Research Topics

Paleontology and Evolutionary Biology(112), Evolution and Paleontology Studies(87), Ichthyology and Marine Biology(48), Amphibian and Reptile Biology(20), Wildlife Ecology and Conservation(10)

Publications154 total

The first pachycephalosaurid from the Late Cretaceous Two Medicine Formation: effects of the Western Interior Seaway on North American pachycephalosaurid evolution
Zoological Journal of the Linnean Society·2025
Updating the Upper Cretaceous (Campanian) Two Medicine Formation of Montana: Lithostratigraphic revisions, new CA-ID-TIMS U-Pb ages, and a calibrated framework for dinosaur occurrences
Geological Society of America Bulletin·2024· 6 cited
Nonpathological inflammation drives the development of an avian flight adaptation
Proceedings of the National Academy of Sciences·2023Open Access
A new pachycephalosaurid from the Hell Creek Formation, Garfield County, Montana, U.S.A.
Figshare·2023Open Access
A new pachycephalosaurid from the Hell Creek Formation, Garfield County, Montana, U.S.A.
Journal of Vertebrate Paleontology·2022· 4 cited
Quantifying vascularity in the frontoparietal dome of<i>Stegoceras validum</i>(Dinosauria: Pachycephalosauridae) from high resolution CT scans
Journal of Vertebrate Paleontology·2021· 5 cited
A remarkable group of thick‐headed Triassic Period archosauromorphs with a wide, possibly Pangean distribution
Journal of Anatomy·2021· 17 citedOpen Access
Baby tyrannosaurid bones and teeth from the Late Cretaceous of western North America<sup>1</sup>
Canadian Journal of Earth Sciences·2021· 16 citedOpen Access
Avian Dinosaur Tail Evolution and Bone Fracture Healing
SSRN Electronic Journal·2021Open Access
An Ion-exchange Bone Demineralization Method for Improved Time, Expense, and Tissue Preservation
Journal of Histochemistry & Cytochemistry·2020· 6 citedOpen Access
Trierarchuncus prairiensis gen. et sp. nov., the last alvarezsaurid: Hell Creek Formation (uppermost Maastrichtian), Montana
Cretaceous Research·2020· 26 cited
Distal spinal nerve development and divergence of avian groups
Scientific Reports·2020· 9 citedOpen Access
Growing up <i>Tyrannosaurus rex</i> : Osteohistology refutes the pygmy “ <i>Nanotyrannus</i> ” and supports ontogenetic niche partitioning in juvenile <i>Tyrannosaurus</i>
Science Advances·2020· 80 citedOpen Access
Growing up Tyrannosaurus rex: Osteohistology refutes the pygmy “ Nanotyrannus ” and supports ontogenetic niche partitioning in juvenile Tyrannosaurus
Global Biodiversity Information Facility·2020· 15 citedOpen Access
29. Dinosaur Physiology
2019
20. Hadrosauridae
2019
Evidence of proteins, chromosomes and chemical markers of DNA in exceptionally preserved dinosaur cartilage
National Science Review·2019· 49 citedOpen Access
Ontogenetic changes in the long bone microstructure in the nine-banded armadillo (Dasypus novemcinctus)
PLoS ONE·2019· 20 citedOpen Access
Avian tail ontogeny, pygostyle formation, and interpretation of juvenile Mesozoic specimens
Scientific Reports·2018· 27 citedOpen Access
A new specimen of the ornithischian dinosaur <i>Hesperosaurus mjosi</i> from the Upper Jurassic Morrison Formation of Montana, U.S.A., and implications for growth and size in Morrison stegosaurs
Journal of Vertebrate Paleontology·2018· 23 citedOpen Access
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Frequent Co-authors

Kevin Padian(13), Mary H. Schweitzer(7), Mark B. Goodwin(7), Armand de Ricqlès(6), Holly N. Woodward(5), Armand J. de Ricqlès(4), David J. Varricchio(4), Jennifer L. Wittmeyer(3), James O. Farlow(3), John B. Scannella(3), Nathan Myhrvold(3), Recep Avci(2), Zhiyong Suo(2), John M. Asara(2), David B. Weishampel(2), Frankie D. Jackson(2), Philip J. Currie(2), Elizabeth A. Freedman Fowler(2), Ellen‐Thérèse Lamm(2), Denver W. Fowler(2)