A Problematic Tyrannosaurid (Dinosauria: Theropoda) Skeleton and Its Implications for Tyrannosaurid Diversity in the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta. [PDF]
Anat Rec (Hoboken), 2020 ABSTRACT Several published censuses have noted the presence of two tyrannosaurids, Daspletosaurus sp. and Albertosaurus sarcophagus, within the Upper Cretaceous Horseshoe Canyon Formation of Alberta. Although A. sarcophagus is known from more than a dozen major discoveries in these strata, Daspletosaurus sp.
Mallon JC +3 more
europepmc +2 more sources
The first deep-snouted tyrannosaur from Upper Cretaceous Ganzhou City of southeastern China [PDF]
Scientific ReportsTyrannosaurids were the most derived group of Tyrannosauroidea and are characterized by having two body plans: gracile, long-snouted and robust, deep-snouted skulls. Both groups lived sympatrically in central Asia.
Wenjie Zheng +3 more
doaj +2 more sources
Functional morphology of neck musculature in the Tyrannosauridae (Dinosauria, Theropoda) as determined via a hierarchical inferential approach [PDF]
Zoological Journal of the Linnean Society, 2007 With multiple well-preserved specimens, tyrannosaurid dinosaurs are ideal subjects for exploring the role of the neck for feeding in an extinct amniote clade. Detailed exploration of the morphology of avian and crocodilian neck muscles grounds phylogenetic inference of musculature of tyrannosaurids.
Eric Snively, Anthony P. Russell
semanticscholar +5 more sources
New information on paleopathologies in non-avian theropod dinosaurs: a case study on South American abelisaurids [PDF]
BMC Ecology and EvolutionStudies on pathological fossil bones have allowed improving the knowledge of physiology and ecology, and consequently the life history of extinct organisms.
Mattia A. Baiano +3 more
doaj +2 more sources
The fast and the frugal: Divergent locomotory strategies drive limb lengthening in theropod dinosaurs. [PDF]
PLoS ONE, 2020 Limb length, cursoriality and speed have long been areas of significant interest in theropod paleobiology, since locomotory capacity, especially running ability, is critical in the pursuit of prey and to avoid becoming prey.
T Alexander Dececchi +4 more
doaj +2 more sources
Lower rotational inertia and larger leg muscles indicate more rapid turns in tyrannosaurids than in other large theropods [PDF]
PeerJ, 2019 Synopsis Tyrannosaurid dinosaurs had large preserved leg muscle attachments and low rotational inertia relative to their body mass, indicating that they could turn more quickly than other large theropods.
Eric Snively +11 more
doaj +6 more sources
A lost tooth in the jungle: revisiting the sole dinosaurian record from northern Brazil [PDF]
Anais da Academia Brasileira de CiênciasThe record of Mesozoic reptiles in the Northern region of Brazil is extremely limited, with the only definite occurrence consisting of two ziphodont teeth recovered from an oil well core in the municipality of Nova Olinda do Norte, Amazonas state, from ...
THEO B. RIBEIRO +3 more
doaj +2 more sources
Reassessment of the enigmatic Late Cretaceous theropod dinosaur, Bagaraatan ostromi [PDF]
The Late Cretaceous Bagaraatan ostromi, described by Osmólska in 1996, is one of the most enigmatic theropod dinosaurs. The holotype possesses a peculiar combination of features, which Osmólska suggested were indicative of a primitive position among ...
Brusatte, Steve +2 more
core +2 more sources
Cancellous bone and theropod dinosaur locomotion. Part III-Inferring posture and locomotor biomechanics in extinct theropods, and its evolution on the line to birds. [PDF]
PeerJ, 2018 This paper is the last of a three-part series that investigates the architecture of cancellous bone in the main hindlimb bones of theropod dinosaurs, and uses cancellous bone architectural patterns to infer locomotor biomechanics in extinct non-avian ...
Bishop PJ +6 more
europepmc +4 more sources