Results 41 to 50 of about 1,568 (192)
Papers in Palaeontology, Volume 9, Issue 2, March/April 2023., 2023 Abstract Current research suggests that the initial radiation of maniraptoran theropods occurred in the Middle Jurassic, although their fossil record is known almost exclusively from the Cretaceous. However, fossils of Jurassic maniraptorans are scarce, usually consisting solely of isolated teeth, and their identifications are often disputed.
Simon Wills +3 more
wiley +1 more source
Multiple optimality criteria support Ornithoscelida [PDF]
Royal Society Open Science, 2017 A recent study of early dinosaur evolution using equal-weights parsimony recovered a scheme of dinosaur interrelationships and classification that differed from historical consensus in a single, but significant, respect; Ornithischia and Saurischia were ...
Luke A. Parry +2 more
doaj +1 more source
First application of dental microwear texture analysis to infer theropod feeding ecology
Palaeontology, Volume 65, Issue 6, November/December 2022., 2022 Abstract Theropods were the dominating apex predators in most Jurassic and Cretaceous terrestrial ecosystems. Their feeding ecology has always been of great interest, and new computational methods have yielded more detailed reconstructions of differences in theropod feeding behaviour. Many approaches, however, rely on well‐preserved skulls.
Daniela E. Winkler +5 more
wiley +1 more source
Cranial anatomy and stratigraphy of a new specimen of the tyrannosaurine dinosaur Daspletosaurus from the Judith River Formation of Central Montana, USA [PDF]
Acta Palaeontologica PolonicaThe tyrannosaurine Daspletosaurus contains three recognized species from the Campanian of Montana and Alberta: Daspletosaurus torosus, Daspletosaurus wilsoni, and Daspletosaurus horneri. The recently named D. wilsoni has been proposed to represent a
ETHAN WARNER-COWGILL +3 more
doaj +1 more source
New mid-cervical vertebral morphotype of Spinosauridae from the Kem Kem Group of Morocco
Vertebrate Anatomy, Morphology, Palaeontology, 2021 An unusual mid-cervical vertebra belonging to a large spinosaurid from the Cenomanian Kem Kem Group of Morocco is described. It is compared to the characteristic morphology of each reconstructed cervical position in Spinosaurus aegyptiacus, based on a ...
Bradley McFeeters
doaj +1 more source
Exceptional preservation of tracheal rings in a glyptodont mammal from the Late Pleistocene of Argentina [PDF]
Acta Palaeontologica Polonica, 2020 Exceptionally well-preserved material from a fossil mammal is presented. For the first time, several fragments of tracheal rings and cricoid cartilage assigned to Panochthus sp.
Martín Zamorano
doaj +1 more source
The Anatomical Record, Volume 305, Issue 10, Page 2766-2790, October 2022., 2022 Living crocodylians are 1 of only 3 groups of vertebrates that evolve an ossified secondary palate. We study the palatal anatomy of fossil crocodylians and its broader implications for the phylogenetics and palaeoecology of the group using micro‐CT data.
Kathleen N. Dollman, Jonah N. Choiniere
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.
MAKOVICKY, PETER J. +3 more
openaire +4 more sources
Estudios Geologicos, 2009 Se describe un diente de dinosaurio terópodo de 98,3 mm de longitud apical hallado en el término municipal de Riodeva (Teruel). El diente ha sido localizado de forma aislada en un nivel de microconglomerados perteneciente a la Formación Villar del ...
R. Royo-Torres, A. Cobos, L. Alcalá
doaj +1 more source
A large abelisaurid (Dinosauria, Theropoda) from Morocco and comments on the Cenomanian theropods from North Africa [PDF]
PeerJ, 2016 We describe the partially preserved femur of a large-bodied theropod dinosaur from the Cenomanian “Kem Kem Compound Assemblage” (KKCA) of Morocco. The fossil is housed in the Museo Geologico e Paleontologico “Gaetano Giorgio Gemmellaro” in Palermo (Italy)
Alfio Alessandro Chiarenza, Andrea Cau
doaj +2 more sources