Results 61 to 70 of about 1,568 (192)
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 +2 more sources
The smallest biggest theropod dinosaur: a tiny pedal ungual of a juvenile Spinosaurus from the Cretaceous of Morocco [PDF]
PeerJ, 2018 We describe a nearly complete pedal ungual phalanx, discovered in the Kem Kem Beds (Cenomanian) of Tafilalt region, south-eastern Morocco. The bone is symmetric, pointed, low, elongate, and almost flat ventrally in lateral aspect.
Simone Maganuco, Cristiano Dal Sasso
doaj +2 more sources
Scientific Reports, 2022 Megaraptora is a theropod clade known from former Gondwana landmasses and Asia. Most members of the clade are known from the Early to Late Cretaceous (Barremian–Santonian), with Maastrichtian megaraptorans known only from isolated and poorly informative ...
A. A. Aranciaga Rolando +5 more
semanticscholar +1 more source
A Review of the Mongolian Cretaceous Dinosaur Saurornithoides (Troodontidae: Theropoda) [PDF]
American Museum Novitates, 2009 Abstract We review the morphology, taxonomy, and phylogenetic relationships of the upper Cretaceous Mongolian troodontid Saurornithoides. Saurornithoides mongoliensis is known only by the holotype from Bayan Zag, Djadokhta Formation. This specimen includes a nearly complete, but weathered, skull and mandibles, a series of dorsal, sacral, and caudal ...
Gabe S. Bever +7 more
openaire +2 more sources
The largest European theropod dinosaurs: remains of a gigantic megalosaurid and giant theropod tracks from the Kimmeridgian of Asturias, Spain [PDF]
PeerJ, 2018 The Kimmeridgian Vega, Tereñes and Lastres formations of Asturias have yielded a rich vertebrate fauna, represented by both abundant tracks and osteological remains.
Oliver W.M. Rauhut +4 more
doaj +2 more sources
Taxonomic notes on Megapnosaurus and 'Syntarsus' (Theropoda: Coelophysidae)
, 2022 The genus name Syntarsus Raath 1969 is preoccupied by the genus Syntarsus Fairmaire 1869. The replacement name Megapnosaurus Ivie et al. 2001 was proposed but its usage is inconsistent due to both controversy on the validity of the nomenclatural act proposing Megapnosaurus and possible synonymy between it and Coelophysis Cope 1889.
McDavid, Skye N, Bugos, Jeb E
openaire +1 more source
The oldest ceratosaurian (Dinosauria: Theropoda), from the Lower Jurassic of Italy, sheds light on the evolution of the three-fingered hand of birds [PDF]
PeerJ, 2018 The homology of the tridactyl hand of birds is a still debated subject, with both paleontological and developmental evidence used in support of alternative identity patterns in the avian fingers.
Cristiano Dal Sasso +2 more
doaj +2 more sources
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
Journal of Vertebrate Paleontology, 2023 Among non-avian dinosaurs, troodontids are relatively rare but diverse. The Nemegt Basin in the Mongolian Gobi Desert, which incorporates three of the most fossiliferous beds in the world, is one such region with high troodontid diversity and has also ...
Sungjin Lee +6 more
semanticscholar +1 more source
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