Results 41 to 50 of about 580 (139)

Macroevolutionary patterns in cranial and lower jaw shape of ceratopsian dinosaurs (dinosauria, ornithischia). phylogeny, morphological integration, and evolutionary rates [PDF]

, 2017
Organisms: Ceratopsians were herbivorous, beaked dinosaurs, ranging from 1 m to 9 m in body length, usually four-footed, and with a bony frill that extended backwards from the cranium over the nape of the neck. Known from Asia, Europe, and North America,
Farke, Aa, Kotsakis, T, Maiorino, L, Piras, P   +3 more
core  

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

How femoral morphology informs our understanding of the evolution of ornithopod locomotion and body size

Palaeontology, Volume 68, Issue 4, July/August 2025.
Abstract Ornithopoda is one of the three main ornithischian dinosaur clades in which secondary quadrupedality is represented. However, when it evolved from obligate bipedality remains controversial. Indeed, the ability to alternate between the two habits was inferred in some ornithopods based on ichnological observations and a mosaic of bipedal and ...
Romain Pintore, Alexandra Houssaye, John R. Hutchinson   +2 more
wiley   +1 more source

Variation in the shape and mechanical performance of the lower jaws in ceratopsid dinosaurs (Ornithischia, Ceratopsia) [PDF]

Journal of Anatomy, 2015
AbstractCeratopsidae represents a group of quadrupedal herbivorous dinosaurs that inhabited western North America and eastern Asia during the Late Cretaceous. Although horns and frills of the cranium are highly variable across species, the lower jaw historically has been considered to be relatively conservative in morphology.
Maiorino, Leonardo, Farke, Andrew A., Kotsakis, Tassos, TERESI , LUCIANO, PIRAS, PAOLO   +4 more
openaire   +4 more sources

A new semi‐fossorial thescelosaurine dinosaur from the Cenomanian‐age Mussentuchit Member of the Cedar Mountain Formation, Utah

The Anatomical Record, Volume 307, Issue 12, Page 3717-3781, December 2024.
Abstract Thescelosaurines are a group of early diverging, ornithischian dinosaurs notable for their conservative bauplans and mosaic of primitive features. Although abundant within the latest Cretaceous ecosystems of North America, their record is poor to absent in earlier assemblages, leaving a large gap in our understanding of their evolution ...
Haviv M. Avrahami, Peter J. Makovicky, Ryan T. Tucker, Lindsay E. Zanno   +3 more
wiley   +1 more source

Fossil, data, and information driven paleontology [PDF]

, 2022
Paleontology is based on fossils but what is the link between fossil specimens and our reconstruction of life history seems to be ambiguous. The majority of paleontological studies focus on fossil morphology to infer their phylogenetic status, but ...
Yu, Congyu
core   +2 more sources

A proxy for brain‐to‐endocranial cavity index in non‐neornithean dinosaurs and other extinct archosaurs

Journal of Comparative Neurology, Volume 532, Issue 3, March 2024.
Illustration of the endocranial doming, which can provide a proxy for the brain‐to‐endocranial cavity index, using the endocast of an adult of the iguanodont dinosaur Proa valdearinnoensis as an example. Abstract Although the brain fills nearly the entire cranial cavity in birds, it can occupy a small portion of it in crocodilians.
Fabien Knoll, Asato Ishikawa, Soichiro Kawabe   +2 more
wiley   +1 more source

Elevated evolutionary rates of biting biomechanics reveal patterns of extraordinary craniodental adaptations in some herbivorous dinosaurs

Palaeontology, Volume 67, Issue 1, January/February 2024.
Abstract Adaptation to specialist ecological niches is a key innovation that has contributed to the evolutionary success of many vertebrate clades, underpinning the acquisition of diverse skull morphologies. Dinosaurs, which dominated Mesozoic terrestrial faunas, acquired herbivory multiple times, and evolution of these herbivorous adaptations is ...
Callum Kunz, Manabu Sakamoto
wiley   +1 more source

Using creation science to demonstrate evolution 2: morphological continuity within Dinosauria [PDF]

, 2011
Creationist literature claims that sufficient gaps in morphological continuity exist to classify dinosaurs into several distinct baramins (‘created kinds’).
Senter, Philip J
core   +2 more sources

Multiple pathways to herbivory underpinned deep divergences in ornithischian evolution [PDF]

, 2023
The extent to which evolution is deterministic is a key question in biology, with intensive debate on how adaptation and constraints might canalize solutions to ecological challenges.
Barrett, Paul, Button, David, Jones, Marc, Lautenschlager, Stephan, Porro, Laura   +4 more
core   +3 more sources