Lower rotational inertia and larger leg muscles indicate more rapid turns in tyrannosaurids than in other large theropods
- Environmental SciencePeerJ
Tyrannosaurids consistently have agility index magnitudes twice those of allosauroids and some other theropods of equivalent mass, turning the body with both legs planted or pivoting over a stance leg.
A Problematic Tyrannosaurid (Dinosauria: Theropoda) Skeleton and Its Implications for Tyrannosaurid Diversity in the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta
- Environmental Science, GeographyAnatomical record
It is shown that only a single species of tyrannosaurid is definitively present in the Horseshoe Canyon Formation, greatly simplifying interpretations of tyrannosaursaurid evolution and ecology in this setting.
Resting Orientations of Dinosaur Scapulae and Forelimbs: A Numerical Analysis, with Implications for Reconstructions and Museum Mounts
- Environmental Science, BiologyPloS one
It is found that in bipedal dinosaurs other than theropods with semilunate carpals, the resting orientation of the elbow is close to a right angle and the resting orientations of the wrist is such that the hand exhibits only slight ulnar deviation from the antebrachium.
Introduction to Evolutionary Teratology, with an Application to the Forelimbs of Tyrannosauridae and Carnotaurinae (Dinosauria: Theropoda)
- BiologyEvolutionary Biology
The contemporary independent formulation of evolutionary teratology allows a better understanding of some anatomical structures, particularly the limbs of tetrapods, characterised by different anterior micromelias, codified following an anatomical nomenclature.
A new look at the phylogeny of coelurosauria (Dlnosauria: Theropoda)
- Biology, Environmental Science
The analysis results in wide phylogenetic separation between Caenagnathus (close to the base of Oviraptorosauria) and Chirostenotes (placed within a clade of crested oviraptorids), casting doubt on their synonymy.
Dental and skeletal pathology in lungfish jaws and tooth plates
- Geography, Medicine
Many lungfish of the tooth plated lineage, both fossil and living, are affected by dental and skeletal pathologies including dental caries, abscesses and cysts within the bone or tooth plate,…
Osteology of Tyrannosaurus Rex: Insights from a nearly complete Skeleton and High-Resolution Computed Tomographic Analysis of the Skull
High-resolution x-ray computed tomographic analysis of the skull reveals internal details not previously observed, raising several possibilities, including the complete absence of a bony sternum in tyrannosaurids.
Theoretical Aspects of Cursorial Adaptations in Dinosaurs
- BiologyThe Quarterly Review of Biology
A theoretical review of the physical constraints on cursorial animals provides a list of the morphological correlates of superior running ability, with emphasis on osteological features, and a system of four levels of running ability (graviportal, medip Mortal, subcursorial, cursorial), is possible to evaluate the running potential of dinosaurs.