Results 91 to 100 of about 261 (112)

Redescription and affinities of Hulsanpes perlei (Dinosauria, Theropoda) from the Upper Cretaceous of Mongolia. [PDF]

PeerJ, 2018
Cau A, Madzia D.
europepmc   +1 more source

Metabolic physiology explains macroevolutionary trends in the melanic colour system across amniotes. [PDF]

Proc Biol Sci, 2018
Eliason CM, Clarke JA.
europepmc   +1 more source

Hind limb muscle reconstruction in the incipiently opisthopubic large therizinosaur Nothronychus (Theropoda; Maniraptora)

Journal of Anatomy, 2021
AbstractTherizinosaurs are highly modified, probably herbivorous, theropods from the Upper Cretaceous of Asia and North America. They are characterized by an extensively pneumatized axial skeleton, and in the derived forms, an incipiently opisthopubic pelvis. The evolution of such a pelvis is expected to be associated with extensive modification of the
David K. Smith
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A taxonomic and phylogenetic re-evaluation of Therizinosauria (Dinosauria: Maniraptora)

Journal of Systematic Palaeontology, 2010
Therizinosaurians are among the most poorly understood dinosaurs. Their unusual morphology and fragmentary fossil record has precluded a synthetic understanding of the group since their remains were first discovered over 60 years ago. Although the clade was recently substantiated as a monophyletic group of maniraptoran theropods, little foundational ...
Lindsay E Zanno
exaly   +2 more sources

The asymmetry of the carpal joint and the evolution of wing folding in maniraptoran theropod dinosaurs [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2010
In extant birds, the hand is permanently abducted towards the ulna, and the wrist joint can bend extensively in this direction to fold the wing when not in use.
Corwin Sullivan, David W E Hone, Xing Xu   +2 more
exaly   +3 more sources

Macroevolutionary integration underlies limb modularity in the origin of avian flight [PDF]

Biology Letters
The origin of flight in avian dinosaurs has been historically an ideal framework for proposing the evolutionary relationship between form and function in limb proportions under the hypothesis of specialized locomotor modules.
Sérgio M Nebreda, Manuel Hernández Fernández, Jesus Marugán-Lobón   +2 more
exaly   +3 more sources

A theropod dinosaur (Saurischia: Maniraptora) from the Upper Cretaceous Yezo Group of Hokkaido, Northern Japan

Paleontological Research, 2008
Forearc basin deposits of the Yezo Group (Matsu-moto, 95; Okada, 982), Hokkaido, Northern Japan, yield abundant fossiliferous calcareous concretions. In addition to numerous ammonoids and inoceramids, these concretions contain various vertebrates, including teleosts, mosasaurids, elasmosaurs, both marine and ter-restrial turtles (Hirayama and Chitoku ...
Mizuki Murakami, Ren Hirayama, Yoshinori Hikida   +2 more
exaly   +2 more sources

New information on the braincase of the North American therizinosaurian (Theropoda, Maniraptora) Falcarius utahensis

Journal of Vertebrate Paleontology, 2011
ABSTRACT Many disarticulated bones from multiple individuals of a primitive therizinosaurian, referred to Falcarius utahensis, were found in the paucispecific Crystal Geyser bonebed in the Lower Cretaceous Cedar Mountain Formation of eastern Utah. To date, more than 2000 specimens from this species have been excavated.
David K. Smith, Lindsay E. Zanno, R. Kent Sanders, Donald D. Deblieux, James I. Kirkland   +4 more
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A new Oviraptorosaur (Theropoda, Maniraptora) from the Late Cretaceous (Campanian) of Utah

Journal of Vertebrate Paleontology, 2005
ABSTRACT Recent field expeditions to Upper Cretaceous deposits within Grand Staircase-Escalante National Monument, southern Utah, have revealed a diverse dinosaurian fauna that includes a previously unknown oviraptorosaur theropod. Represented by a single partial specimen consisting of manal and pedal elements, this new taxon, Hagryphus giganteus, gen.
Lindsay E Zanno, Scott D Sampson
exaly   +2 more sources

Phylogeny of a new gigantic paravian (Theropoda; Coelurosauria; Maniraptora) from the Upper Cretaceous of James Ross Island, Antarctica

Cretaceous Research, 2019
Abstract A description with phylogenetic analyses is provided for Imperobator antarcticus, gen. et sp. nov., an early Maastrichtian, basal paravian (Theropoda; Maniraptora) from the Naze Peninsula, James Ross Island, Antarctica. In 2003, researchers uncovered the remains of a theropod later referred to Dromaeosauridae.
Judd A Case
exaly   +2 more sources