Vertebrate Anatomy, Morphology, Palaeontology, 2023 The taxonomic validity of the holotype and sole specimen of the pachycephalosaurid Gravitholus albertae (TMP 1972.027.0001) from the Belly River Group (Alberta, Canada), remains unresolved forty years after its first description.
Aaron Dyer, Mark Powers, Phiip Currie
doaj +2 more sources
New specimens of the basal ornithischian dinosaur Lesothosaurus diagnosticus Galton, 1978 from the Early Jurassic of South Africa [PDF]
, 2016 We describe new specimens of the basal ornithischian dinosaur Lesothosaurus diagnosticus Galton, 1978 collected from a bonebed in the Fouriesburg district of the Free State, South Africa.
Barrett, Paul M. +14 more
core +6 more sources
New information on ornithopod dinosaurs from the Late Jurassic of Portugal [PDF]
Acta Palaeontologica Polonica, 2020 retaceous–Paleogene boundary. However, most of the attention has been given to derived forms (hadrosaurids). Herein, cranial and post-cranial ornithopod material from the Upper Jurassic Lourinhã Formation and housed at Museu da Lourinhã is described and ...
Filippo Maria Rotatori +2 more
doaj +1 more source
Diversity, 2023 An exceptional articulated skeleton of a new basal neornithischian dinosaur, Minimocursor phunoiensis gen. et sp. nov., was discovered in the Late Jurassic Phu Kradung Formation at the Phu Noi locality, Kalasin Province, Thailand, a highly productive non-
Sita Manitkoon +7 more
doaj +1 more source
Multiple optimality criteria support Ornithoscelida [PDF]
Royal Society Open Science, 2017 A recent study of early dinosaur evolution using equal-weights parsimony recovered a scheme of dinosaur interrelationships and classification that differed from historical consensus in a single, but significant, respect; Ornithischia and Saurischia were ...
Luke A. Parry +2 more
doaj +1 more source
A new ankylosaurine dinosaur from the Judith River Formation of Montana, USA, based on an exceptional skeleton with soft tissue preservation [PDF]
Royal Society Open Science, 2017 The terrestrial Judith River Formation of northern Montana was deposited over an approximately 4 Myr interval during the Campanian (Late Cretaceous). Despite having been prospected and collected continuously by palaeontologists for over a century, few ...
Victoria M. Arbour, David C. Evans
doaj +1 more source
Taphonomy and taxonomy of a juvenile lambeosaurine (Ornithischia: Hadrosauridae) bonebed from the late Campanian Wapiti Formation of northwestern Alberta, Canada [PDF]
PeerJ, 2021 Hadrosaurid (duck-billed) dinosaur bonebeds are exceedingly prevalent in upper Cretaceous (Campanian–Maastrichtian) strata from the Midwest of North America (especially Alberta, Canada, and Montana, U.S.A) but are less frequently documented from more ...
Brayden Holland +9 more
doaj +2 more sources
Enamel microstructure and dental histology in a heterodontosaurid dinosaur: Heterodontosaurus tucki [PDF]
Acta Palaeontologica Polonica, 2023 Among non-avian dinosaurs, Heterodontosaurus tucki is unique for possessing complex dental features including both morphological and proportional heterodonty, sub-hypsodonty, tooth occlusion, and extensive low-angled wear facets—a collection of ...
CECILIA E. CALVERT +5 more
doaj +1 more source
Long-horned Ceratopsidae from the Foremost Formation (Campanian) of southern Alberta [PDF]
PeerJ, 2018 The horned Ceratopsidae represent one of the last radiations of dinosaurs, and despite a decade of intense work greatly adding to our understanding of this diversification, their early evolution is still poorly known. Here, two postorbital horncores from
Caleb M. Brown
doaj +2 more sources
The systematic relationships and biogeographic history of ornithischian dinosaurs [PDF]
PeerJ, 2015 The systematic relationships of taxa traditionally referred to as ‘basal ornithopods’ or ‘hypsilophodontids’ remain poorly resolved since it was discovered that these taxa are not a monophyletic group, but rather a paraphyletic set of neornithischian ...
Clint A. Boyd
doaj +2 more sources