Results 51 to 60 of about 989 (201)
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 ...
Maidment, SC +4 more
core +1 more source
, 2022 Figure 6. Strict consensus tree from the unconstrained analysis depicting node numbers mentioned in the text and bootstrap values equal to or higher than 40%.
Norman, David B +3 more
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Integumentary structure and composition in an exceptionally well-preserved hadrosaur (Dinosauria: Ornithischia) [PDF]
PeerJ, 2019 Preserved labile tissues (e.g., skin, muscle) in the fossil record of terrestrial vertebrates are increasingly becoming recognized as an important source of biological and taphonomic information.
Mauricio Barbi +7 more
doaj +2 more sources
Secondary cartilage revealed in a non-avian dinosaur embryo. [PDF]
PLoS ONE, 2013 The skull and jaws of extant birds possess secondary cartilage, a tissue that arises after bone formation during embryonic development at articulations, ligamentous and muscular insertions.
Alida M Bailleul +2 more
doaj +1 more source
III.—Saurischia and Ornithischia [PDF]
Geological Magazine, 1914 In 1888 the late Professor H. G. Seeley pointed out for the first time (Rep. Brit. Assoc. Adv. Sci., 1888, pp. 698–9) that Owens' order ‘Dinosauria’ should be divided into two great natural groups, especially on account of their pelvis. He called them Saurischia (=‘Theropoda’ + ‘Sauropoda’) and Ornithischia (=‘Orthopoda’).
openaire +1 more source
, 2021 FIG. 18. Occipital region of Haya griva, A, IGM 100/2017 and B, IGM 100/2019. Abbreviations in appendix 1.Published as part of Barta, Daniel E. & Norell, Mark A., 2021, The Osteology Of Haya Griva (Dinosauria: Ornithischia) From The Late Cretaceous Of ...
Norell, Mark A., Barta, Daniel E.
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Ornithopod diversity in the Griman Creek Formation (Cenomanian), New South Wales, Australia [PDF]
PeerJ, 2018 During the Early Cretaceous, dinosaur communities of the Australian-Antarctic rift system (Eumeralla and Wonthaggi formations) cropping out in Victoria were apparently dominated by a diverse small-bodied ‘basal ornithopod’ fauna.
Phil R. Bell +3 more
doaj +2 more sources
The Anatomical Record, EarlyView.Abstract Last year, we challenged the view that large‐bodied theropod dinosaurs such as Tyrannosaurus rex resembled primates in cognition and behavior, a proposition made by Herculano‐Houzel in 2023. More recently, Jensen et al. have criticized our work on this topic, raising methodological and conceptual issues.
Kai R. Caspar +5 more
wiley +1 more source
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
The cranial anatomy of the neornithischian dinosaur Thescelosaurus neglectus [PDF]
PeerJ, 2014 Though the dinosaur Thescelosaurus neglectus was first described in 1913 and is known from the relatively fossiliferous Lance and Hell Creek formations in the Western Interior Basin of North America, the cranial anatomy of this species remains poorly ...
Clint A. Boyd
doaj +2 more sources