Craniofacial ontogeny in Tyrannosauridae (Dinosauria, Coelurosauria) [PDF]
Journal of Vertebrate Paleontology, 1999 A study of ontogenetic variation is used to clarify aspects of tyrannosaurid taxonomy and investigate the supposed phenomenon of dwarfism in the clade.
TD Carr
semanticscholar +9 more sources
Acta Palaeontologica Romaniae, 2021 A right frontal bone belonging to the tyrannosaurid theropod Teratophoneus curriei from the Campanian Kaiparowits Formation of Utah provides important anatomical information that is useful in understanding tyrannosaurid taxonomy and relationships.
Chan‐gyu Yun
semanticscholar +3 more sources
Diversity of late Maastrichtian Tyrannosauridae (Dinosauria: Theropoda) from western North America [PDF]
Zoological Journal of the Linnean Society, 2004 The tooth taxon Aublysodon mirandus was reinstated following the collection of nondenticulate tyrannosaurid premaxillary teeth from late Maastrichtian deposits in western North America. A small skull from the Hell Creek Formation of Montana (the ‘Jordan theropod’, LACM 28471), that was associated with a nondenticulate premaxillary tooth, was referred ...
Thomas D. Carr, Thomas E. Williamson
semanticscholar +8 more sources
Functional variation of neck muscles and their relation to feeding style in Tyrannosauridae and other large theropod dinosaurs [PDF]
The Anatomical Record, 2007 AbstractReconstructed neck muscles of large theropod dinosaurs suggest influences on feeding style that paralleled variation in skull mechanics. In all examined theropods, the head dorsiflexor m. transversospinalis capitis probably filled in the posterior dorsal concavity of the neck, for a more crocodilian‐ than avian‐like profile in this region.
Eric Snively, Anthony P. Russell
semanticscholar +5 more sources
Reconstructions of the Axial Muscle Insertions in the Occipital Region of Dinosaurs: Evaluations of Past Hypotheses on Marginocephalia and Tyrannosauridae Using the Extant Phylogenetic Bracket Approach [PDF]
The Anatomical Record, 2010 AbstractThe insertions of the cervical axial musculature on the occiput in marginocephalian and tyrannosaurid dinosaurs have been reconstructed in several studies with a view to their functional implications. Most of the past reconstructions on marginocephalians, however, relied on the anatomy of just one clade of reptiles, Lepidosauria, and lack ...
Takanobu Tsuihiji
semanticscholar +5 more sources
The comparative energetics of the turtles and crocodiles. [PDF]
Ecol Evol, 2022 This paper discusses patterns in Dynamic Energy Budget parameters and implied traits that we found for turtles and crocodiles. We explain, for instance, why the proportionality of weight at birth with the square root of ultimate weight points to problems with water loss and nitrogen‐waste accumulation.
Marn N, Kooijman SALM.
europepmc +2 more sources
A new tyrannosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Menefee Formation of New Mexico [PDF]
PeerJ, 2018 The giant tyrannosaurids were the apex predators of western North America and Asia during the close of the Cretaceous Period. Although many tyrannosaurid species are known from numerous skeletons representing multiple growth stages, the early evolution ...
Andrew T. McDonald +2 more
doaj +3 more sources
Tyrant dinosaur evolution tracks the rise and fall of Late Cretaceous oceans. [PDF]
PLoS ONE, 2013 The Late Cretaceous (∼95-66 million years ago) western North American landmass of Laramidia displayed heightened non-marine vertebrate diversity and intracontinental regionalism relative to other latest Cretaceous Laurasian ecosystems.
Mark A Loewen +4 more
doaj +2 more sources