Results 1 to 10 of about 809 (146)

A SUBADULT MAXILLA OF A TYRANNOSAURIDAE FROM THE TWO MEDICINE FORMATION, MONTANA, UNITED STATES [PDF]

open access: diamondPapéis Avulsos de Zoologia, 2017
Daspletosaurus is a Campanian genus of Tyrannosauridae from North America. This genus occupied the same geographic area of Albertosaurus, but remains of Albertosaurus are more abundant than Daspletosaurus.
RAFAEL DELCOURT
doaj   +6 more sources

Geology and taphonomy of a unique tyrannosaurid bonebed from the upper Campanian Kaiparowits Formation of southern Utah: implications for tyrannosaurid gregariousness [PDF]

open access: yesPeerJ, 2021
Tyrannosaurids are hypothesized to be gregarious, possibly parasocial carnivores engaging in cooperative hunting and extended parental care. A tyrannosaurid (cf.
Alan L. Titus   +8 more
doaj   +6 more sources

Allometric growth in the frontals of the Mongolian theropod dinosaur Tarbosaurus bataar [PDF]

open access: goldActa Palaeontologica Polonica, 2022
Tarbosaurus bataar is a sister taxon of the well-studied theropod dinosaur Tyrannosaurus rex, and numerous fossils of this tyrannosaurid have been discovered in the Upper Cretaceous Nemegt Formation of Mongolia. Although specimens of different sizes of
CHAN-GYU YUN   +2 more
doaj   +3 more sources

The osteology and affinities of Eotyrannus lengi, a tyrannosauroid theropod from the Wealden Supergroup of southern England [PDF]

open access: yesPeerJ, 2022
Eotyrannus lengi Hutt et al., 2001 from the Lower Cretaceous Wessex Formation (part of the Wealden Supergroup) of the Isle of Wight, southern England, is described in detail, compared with other theropods, and evaluated in a new phylogenetic analysis ...
Darren Naish, Andrea Cau
doaj   +3 more sources

A reassessment of the taxonomic validity of Dynamoterror dynastes (Theropoda: Tyrannosauridae)

open access: diamondZoodiversity, 2020
Associated fragmentary materials of tyrannosaurid theropod, Dynamoterror dynastes McDonald et al., 2018, were reported in 2018 from the Upper Cretaceous Menefee Formation of New Mexico. However, two originally proposed autapomorphies (i.e. prefrontonasal
Chan-gyu Yun
doaj   +3 more sources

A 'terror of tyrannosaurs': the first trackways of tyrannosaurids and evidence of gregariousness and pathology in Tyrannosauridae. [PDF]

open access: goldPLoS ONE, 2014
The skeletal record of tyrannosaurids is well-documented, whereas their footprint record is surprisingly sparse. There are only a few isolated footprints attributed to tyrannosaurids and, hitherto, no reported trackways.
Richard T McCrea   +6 more
doaj   +3 more sources

A new tyrannosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Menefee Formation of New Mexico [PDF]

open access: yesPeerJ, 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

The first deep-snouted tyrannosaur from Upper Cretaceous Ganzhou City of southeastern China [PDF]

open access: yesScientific Reports
Tyrannosaurids 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

The fast and the frugal: Divergent locomotory strategies drive limb lengthening in theropod dinosaurs. [PDF]

open access: yesPLoS 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

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