Results 41 to 50 of about 2,665 (231)
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 +1 more source
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
eLife, 2022 The dental system of ceratopsids is among the most specialized structure in Dinosauria by the presence of tooth batteries and high-angled wear surfaces.
Jinfeng Hu +5 more
doaj +1 more source
Support for the placement of Chilesaurus within Ornithischia: a reply to Müller et al. [PDF]
Biol Lett, 2018 Baron MG, Barrett PM.
europepmc +3 more sources
The postcranial skeleton of Vagaceratops irvinensis (Dinosauria, Ceratopsidae)
Vertebrate Anatomy, Morphology, Palaeontology, 2014 The postcranial skeleton of Vagaceratops (= Chasmosaurus) irvinensis (CMN 41357), lacking only the tail, most of the left front and left hind limbs, and portions of the pelvis, is preserved in articulation.
Robert B Holmes
doaj +3 more sources
New Fossils of Stegosaurs from the Upper Jurassic of the Eastern Iberian Peninsula (Spain)
Diversity, 2022 The eastern Iberian Peninsula is one of the places with most stegosaur fossils in all of Europe. In the present study, we describe new remains from six different fossil sites from the Upper Jurassic of the Villar del Arzobispo Formation (Kimmeridgian ...
Sergio Sánchez-Fenollosa +2 more
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A reassessment of the purported ankylosaurian dinosaur Bienosaurus lufengensis from the Lower Lufeng Formation of Yunnan, China [PDF]
Acta Palaeontologica Polonica, 2019 The earliest definitive ornithischian dinosaurs are from the Early Jurassic and are rare components of early dinosaur faunas. The Lower Lufeng Formation (Hettangian–Sinemurian) of Yunnan Province, China, has yielded a diverse Early Jurassic terrestrial ...
Thomas J. Raven +3 more
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Limb-Bone Scaling Indicates Diverse Stance and Gait in Quadrupedal Ornithischian Dinosaurs [PDF]
, 2012 Background The most primitive ornithischian dinosaurs were small bipeds, but quadrupedality evolved three times independently in the clade. The transition to quadrupedality from bipedal ancestors is rare in the history of terrestrial vertebrate ...
Barrett, PM +3 more
core +1 more source
The Anatomical Record, Volume 306, Issue 7, Page 1646-1668, July 2023., 2023 Abstract In studying the skeletal allometry of any vertebrate, it is important to sample the ontogenetic extremes to ensure the accuracy of parameter estimation; this is particularly true for fossil taxa, where sampling of ontogenetic series is incomplete and sporadic.
Jordan C. Mallon +3 more
wiley +1 more source
Pararhabdodon Isonensis and Tsintaosaurus Spinorhinus: A New Clade of Lambeosaurine Hadrosaurids from Eurasia [PDF]
, 2009 We present new anatomical information showing that Koutalisaurus kohlerorum, from the Maastrichtian of Lleida Province, northeastern Spain, is most probably the junior synonym of Pararhabdodon isonensis from the same region.
Prieto-Marquez, Aalbert +1 more
core +1 more source