Results 71 to 80 of about 4,665 (222)
Journal of Anatomy, EarlyView.A three‐dimensional model is used to analyze the locomotor biomechanics of the large Late Triassic archosaurian reptile Postosuchus kirkpatricki. The study finds that it is more uncertain than previously concluded whether it was quadrupedal or bipedal, and plantigrade or digitigrade, but it clearly had locomotor specializations including large hindlimb
John R. Hutchinson +6 more
wiley +1 more source
BP1 theropod size and velocity estimations.
, 2020 BP1 theropod size and velocity estimations.
Dugald A. Ross (5027426) +9 more
core +1 more source
Rivista Italiana di Paleontologia e StratigrafiaVertebrate palaeoichnology often aims at the identification of the trackmaker by associating diagnostic features from the known taxa’s skeletal anatomy with its inferred footprint morphology, but deep penetrative tracks and/or deep, detached undertracks
LAURA PIÑUELA +4 more
doaj +1 more source
The Journal of Geology, 2007 Abstract A dinosaur trackway in the Middle Jurassic eolian Entrada Sandstone of southern Utah, U.S.A., exposes three undertracks that we have modeled as isolated tectonic regimes showing the development of fold‐thrust ramp systems induced by the dinosaur’s feet.
Graversen, Ole +2 more
openaire +2 more sources
The pectoralis muscle orientation as an indicator of the modes of wing‐propelled locomotion in birds
Journal of Anatomy, EarlyView.The pectoralis orientation of birds was consistent with the orientation of the aerodynamic force acting on the wing, varying by wing‐propelled locomotion (WPL) mode. The skeletal morphology unique to each WPL mode, related to the origin/insertion of the pectoralis, may be associated with these functional demands of pectoralis orientation.
Takumi Akeda, Shin‐ichi Fujiwara
wiley +1 more source
Complete demineralization of theropod bone.
, 2013 (A) SEM image of hollow, vascular theropod extract at 75× magnification. B) EDS signature of 11(A) vessel, rich in Ca, O, Mn, and P. C) SEM image of theropod vessel at 120× magnification. D) EDS signature of 11(C) vessel, rich in calcium and phosphate.
Melissa E. Lenczewski (361028) +2 more
core +1 more source
Skeletal completeness of the non-avian theropod dinosaur fossil record [PDF]
, 2019 Non-avian theropods were a highly successful clade of bipedal, predominantly carnivorous, dinosaurs. Their diversity and macroevolutionary patterns have been the subject of many studies.
Cashmore, Daniel +3 more
core +1 more source
Two new compsognathid-like theropods show diversified predation strategies in theropod dinosaurs. [PDF]
Natl Sci RevABSTRACT The Compsognathidae was originally considered an early-diverging clade of coelurosaur theropods. However, recent study suggests that Compsognathidae is not monophyletic. Here, we describe two new compsognathid-like species, Sinosauropteryx lingyuanensis sp. nov. and Huadanosaurus sinensis gen. et sp. nov.
Qiu R, Wang X, Jiang S, Meng J, Zhou Z.
europepmc +3 more sources
Body Size as a Driver of Scavenging in Theropod Dinosaurs [PDF]
The American Naturalist, 2016 Theropod dinosaurs dominated Earth's terrestrial ecosystem as a diverse group of predators for more than 160 million years, yet little is known about their foraging ecology. Maintaining a balanced energy budget presented a major challenge for therapods, which ranged from the chicken-sized Microraptor up to the whale-sized Giganotosaurus, in the face of
Kane, Adam +3 more
openaire +4 more sources