Results 81 to 90 of about 2,952 (213)

Layer‐by‐layer soft‐tissue effects on flexion–extension‐dominant passive ex vivo limb joint ROM in quadrupedal mammals: An anatomical contribution to a morphofunctional framework

open access: yesJournal of Anatomy, EarlyView.
Layer‐by‐layer passive ex vivo assessment of flexion–extension‐dominant limb joint ROM across rabbit, pudu deer, chilla fox and pig revealed joint‐, tissue‐ and taxon‐specific responses to progressive tissue removal. Proximal joints often showed increasing ROM, whereas distal joints often showed non‐monotonic responses.
Paul Medina‐González   +4 more
wiley   +1 more source

Avian ancestors: A Review of the Phylogenetic Relationships of the Theropods Unenlagiidae, Microraptoria, Anchiornis and Scansoriopterygidae

open access: yes, 2013
Although consensus exists among authors that birds evolved from coelurosaurian theropods, paleontologists still debate the identification of the group of coelurosaurians that most closely approaches the common ancestor of birds.
Agnolin, Federico   +1 more
core   +1 more source

A large abelisaurid (Dinosauria, Theropoda) from Morocco and comments on the Cenomanian theropods from North Africa [PDF]

open access: yes, 2016
We describe the partially preserved femur of a large-bodied theropod dinosaur from the Cenomanian “Kem Kem Compound Assemblage” (KKCA) of Morocco. The fossil is housed in the Museo Geologico e Paleontologico “Gaetano Giorgio Gemmellaro” in Palermo (Italy)
Alfio Alessandro Chiarenza   +5 more
core   +2 more sources

The last non-avian theropods of Europe: Palaeoecology and Biogeography inferred from dental records from the uppermost Maastrichtian of Catalonia, Spain [PDF]

open access: yes
Non-avian theropods were essential components of terrestrial ecosystems during the Mesozoic, were highly diverse in size and lifestyles across different regions of the planet.
Baiano, M. A.   +4 more
core   +3 more sources

Unusual pectoral apparatus in a predatory dinosaur resolves avian wishbone homology

open access: yesScientific Reports, 2021
The furcula is a distinctive element of the pectoral skeleton in birds, which strengthens the shoulder region to withstand the rigor of flight. Although its origin among theropod dinosaurs is now well-supported, the homology of the furcula relative to ...
Andrea Cau   +4 more
doaj   +1 more source

NEW ABELISAURID MATERIAL FROM THE UPPER CRETACEOUS (CENOMANIAN) OF MOROCCO

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2011
Fragmentary cranial bones of dinosaur origin have been recently recovered from the Kem Kem beds (Upper Cretaceous, Cenomanian) of Morocco. They include two incompletely preserved maxillary bones evidencing diagnostic features of abelisaurid theropods ...
SIMONE D'ORAZI PORCHETTI   +3 more
doaj   +1 more source

Figure 1 in Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods

open access: yes, 2022
Figure 1. Daurlong wangi holotype. (a), whole specimen. (b), skull. (c), detail of orbit region. (d), feather remains associated to the thoracic vertebrae. (e), anuran skeleton.
Guo, Bin   +5 more
core   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

open access: yesThe Anatomical Record, Volume 309, Issue 11, Page 3137-3168, November 2026.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro   +7 more
wiley   +1 more source

THE TARSUS OF THEROPOD DINOSAURS

open access: yes, 1974
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Welles, Samuel P. (Samuel Paul)   +1 more
openaire   +1 more source

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

open access: yesThe Anatomical Record, Volume 309, Issue 11, Page 3106-3122, November 2026.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer   +2 more
wiley   +1 more source

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