Results 41 to 50 of about 2,200 (200)

Appendicular skeleton of Protoceratops andrewsi (Dinosauria, Ornithischia): comparative morphology, ontogenetic changes, and the implications for non-ceratopsid ceratopsian locomotion [PDF]

PeerJ, 2019
Protoceratops andrewsi is a well-known ceratopsian dinosaur from the Djadokhta Formation (Upper Cretaceous, Mongolia). Since the 1920s, numerous skeletons of different ontogenetic stages from hatchlings to adults, including fully articulated specimens ...
Justyna Słowiak, Victor S. Tereshchenko, Łucja Fostowicz-Frelik   +2 more
doaj   +2 more sources

The vertebrate fauna from the stipite layers of the Grands Causses (Middle Jurassic, France)

Frontiers in Ecology and Evolution, 2014
The stipites are Bathonian (Middle Jurassic) coals that formed in an everglades-like environment and are now exposed in the Grands Causses (southern France).
Fabien eKnoll, Fabien eKnoll, Raquel eLópez-Antoñanzas, Raquel eLópez-Antoñanzas   +3 more
doaj   +1 more source

Discrete and continuous character-based disparity analyses converge to the same macroevolutionary signa. A case study from captorhinids [PDF]

, 2017
The relationship between diversity and disparity during the evolutionary history of a clade provides unique insights into evolutionary radiations and the biological response to bottlenecks and to extinctions.
Brocklehurst, Neil, Fröbisch, Jörg, Romano, Marco   +2 more
core   +2 more sources

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, Phil R. Bell, Federico Fanti, James J. Dynes, Anezka Kolaceke, Josef Buttigieg, Ian M. Coulson, Philip J. Currie   +7 more
doaj   +2 more sources

The higher-level phylogeny of Archosauria (Tetrapoda:Diapsida) [PDF]

, 2010
Crown group Archosauria, which includes birds, dinosaurs, crocodylomorphs, and several extinct Mesozoic groups, is a primary division of the vertebrate tree of life.
Arcucci A., Arcucci A., Ballew K. L., Barberena M. C., Bennett S. C., Benton M. J., Benton M. J., Benton M. J., Bonaparte J. F., Bonaparte J. F., Bonaparte J. F., Bonaparte J. F., Brinkman D., Broom R., Broom R., Brusatte S. L., Busbey A. B., Charig A. J., Charig A. J., Chatterjee S., Chatterjee S., Chatterjee S., Colbert E. H., Colbert E. H., Colbert E. H., Colbert E. H., Cope E. D., Cruickshank A. R. I., Crush P. J., Dawley R. M., Ezcurra M. D., Galton P. M., Galton P. M., Galton P. M., Galton P. M., Galton P. M., Gauthier J. A., Gebauer E. V. I., Gower D. J., Gower D. J., Gower D. J., Gower D. J., Gower D. J., Gregory J. T., Hallam A., Heckert A. B., Hone D. W. E., Huene F. von, Huene F. von, Hungerbühler A., Hunt A. P., Hunt A. P., Joyce W., Julia B. Desojo, Juul L., Krebs B., Krebs B., Krebs B., Krebs B., Langer M. C., Long R. A., Max C. Langer, McGregor J. H., Meyer H. von, Michael J. Benton, Moser M., Nesbitt S. J., Norman D. B., Novas F. E., Novas F. E., Osborn H. F., Osborn H. F., Owen R., Padian K., Parker W. G., Parrish J. M., Parrish J. M., Peters D., Pinna G., Rauhut O. W. M., Reig O. A., Romer A. S., Romer A. S., Romer A. S., Romer A. S., Romer A. S., Romer A. S., Romer A. S., Romer A. S., Santa Luca A. P., Santa Luca A. P., Sereno P. C., Sereno P. C., Sereno P. C., Sereno P. C., Sereno P. C., Sereno P. C., Sereno P. C., Sereno P. C., Shubin N. H., Sill W. D., Sill W. D., Simms M. J., Stephen L. Brusatte, Swofford D. L., Thulborn R. A., Thulborn R. A., Tykoski R. S., Weinbaum J. C., Welles S. P., Wild R., Wilkinson M., Wroblewski A. F.-J., Young C. C., Zhang F. K.   +114 more
core   +1 more source

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, Brian K Hall, John R Horner   +2 more
doaj   +1 more source

A new phylogeny of Stegosauria (Dinosauria, Ornithischia) [PDF]

Palaeontology, 2017
The stegosaurs are some of the most easily recognizable dinosaurs, but are surprisingly rare as fossils. Consequently much remains unknown about their palaeobiology, and every new stegosaurian find contributes to our understanding of the evolution of the clade.
Raven, Tom, Maidment, Susannah
openaire   +3 more sources

The anatomy and palaeobiology of the early armoured dinosaur Scutellosaurus lawleri (Ornithischia: Thyreophora) from the Kayenta Formation (Lower Jurassic) of Arizona

Royal Society Open Science, 2021
The armoured dinosaurs, Thyreophora, were a diverse clade of ornithischians known from the Early Jurassic to the end of the Cretaceous. During the Middle and Late Jurassic, the thyreophorans radiated to evolve large body size, quadrupedality, and complex
Benjamin T. Breeden, Thomas J. Raven, Richard J. Butler, Timothy B. Rowe, Susannah C. R. Maidment   +4 more
doaj   +1 more source

Dinosaurs in decline tens of millions of years before their final extinction [PDF]

, 2016
Whether dinosaurs were in a long-term decline or whether they were reigning strong right up to their final disappearance at the Cretaceous–Paleogene (K-Pg) mass extinction event 66 Mya has been debated for decades with no clear resolution.
Chenet, Chris Venditti, Manabu Sakamoto, Michael J. Benton, Sullivan   +4 more
core   +2 more sources

First Valanginian Polacanthus foxii (Dinosauria, Ankylosauria) from England, from the Lower Cretaceous of Bexhill, Sussex [PDF]

, 2014
A new partial skeleton of the armoured ornithischian dinosaur Polacanthus found in the Wadhurst Clay Formation (Valanginian stage) of Bexhill, Sussex is the oldest recorded occurrence of this taxon.
Anon., Arbour, Arbour, Austen, Barrett, Blows, Blows, Blows, Blows, Blows, Britt, Burns, Carpenter, Coombs, Currie, Delair, Hulke, Hulke, Kerri Honeysett, Kilbourne, Kirkland, Kirkland, Kirkland, Lydekker, Mantell, Mantell, Naish, Norman, Norman, Norman, Norman, Osborn, Owen, Pereda-Suberbiola, Pereda-Suberbiola, Pereda-Suberbiola, Pereda-Suberbiola, Pereda-Suberbiola, Radley, Radley, Rasnitsyn, Rawson, Russell, Seeley, Seeley, Thomas, Vickaryous, Vickaryous, Watson, Wieland, William T. Blows   +50 more
core   +1 more source