Results 61 to 70 of about 2,363 (235)
New perspectives on body size and shape evolution in dinosaurs
Biological Reviews, Volume 100, Issue 5, Page 1829-1860, October 2025.ABSTRACT Diversity in the body shapes and sizes of dinosaurs was foundational to their widespread success during the Mesozoic era. The ability to quantify body size and form reliably is therefore critical to the study of dinosaur biology and evolution.
Matthew Dempsey +4 more
wiley +1 more source
Osteohistology of the unusually fast‐growing theropod dinosaur Ceratosaurus
Journal of Anatomy, Volume 247, Issue 3-4, Page 765-789, September/October 2025.We report the histology of multiple elements attributed to four individuals of Ceratosaurus. We find that the histology and growth models corroborate previous reports of rapid tissue growth in the genus. Abstract Ceratosaurus is a large‐bodied non‐avian theropod dinosaur known from the Upper Jurassic Morrison Formation of North America and is ...
Riley Sombathy +2 more
wiley +1 more source
Osteology and Relationships of Byronosaurus jaffei (Theropoda: Troodontidae) [PDF]
American Museum Novitates, 2003 The troodontid Byronosaurus jaffei is known from two specimens from adjacent localities in the Nemegt basin, Omnogov Aimag, Mongolia. These specimens are composed of well- preserved cranial material and fragmentary postcrania. All of these elements are described here.
PETER J. MAKOVICKY +3 more
openaire +2 more sources
Anatomy ofMahakala omnogovae(Theropoda: Dromaeosauridae), Tögrögiin Shiree, Mongolia [PDF]
American Museum Novitates, 2011 ABSTRACT The dromaeosaurid Mahakala omnogovae is known from a unique specimen from the Late Cretaceous deposits of the Djadokhta Formation at Togrogiin Shiree, Omnogov Aimag, Mongolia. The holotype specimen is comprised of a well-preserved but partial skull and a nearly complete postcranial skeleton.
Turner, Alan Hamilton +2 more
openaire +2 more sources
Journal of Anatomy, Volume 247, Issue 3-4, Page 790-818, September/October 2025.A combined approach of osteology and histology was used to examine the cheek regions of dinosaurs. Strong evidence was found for a soft tissue in this region connecting the zygoma to the mandible, here named the ‘exoparia’. Abstract Unlike mammals, reptiles typically lack large muscles and ligaments that connect the zygoma to the mandible.
Henry S. Sharpe +7 more
wiley +1 more source
THE DIET OF OSTRICH DINOSAURS (THEROPODA: ORNITHOMIMOSAURIA) [PDF]
Palaeontology, 2005 : The diets of ornithomimosaurian dinosaurs (Theropoda: Ornithomimosauria) have proved to be contentious owing to a dearth of unambiguous evidence in support of carnivory, omnivory or herbivory. Re-assessment of anatomical, taphonomical and palaeoecological evidence, and estimates of daily minimal energy budgets for two derived ornithomimosaurian ...
openaire +1 more source
Systematic Entomology, Volume 50, Issue 3, Page 630-645, July 2025.We describe †Cretovelona orussopteryx n. gen. & sp. from Kachin amber. The fossil is examined with synchrotron scanning and integrated into an existing morphological data set for Orussoidea. This fossil parasitoid wasp displays a unique character combination demonstrating intermediate conditions in evolving the complex features employed in echo ...
Lars Vilhelmsen +4 more
wiley +1 more source
The phylogeny of Tetanurae (Dinosauria: Theropoda)
Journal of Systematic Palaeontology, 2012 Tetanuran theropods represent the majority of Mesozoic predatory dinosaur diversity and the lineage leading to extant Aves. Thus their history is relevant to understanding the evolution of dinosaur diversity, Mesozoic terrestrial ecosystems, and modern birds.
Carrano, M, Benson, R, Sampson, S
openaire +1 more source
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 +3 more
doaj +1 more source
Redescription and affinities of Hulsanpes perlei (Dinosauria, Theropoda) from the Upper Cretaceous of Mongolia [PDF]
PeerJ, 2018 Hulsanpes perlei is an enigmatic theropod dinosaur from the Baruungoyot Formation (?mid- to upper Campanian, Upper Cretaceous) of Mongolia. It was discovered in 1970, during the third Polish-Mongolian paleontological expedition to the Nemegt Basin.
Andrea Cau, Daniel Madzia
doaj +2 more sources