Results 51 to 60 of about 29,552 (279)

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

open access: yesThe Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe   +4 more
wiley   +1 more source

Redescription of Hypoptopoma inexspectata (Holmberg, 1883), with notes on its anatomy (Siluriformes: Loricariidae). [PDF]

open access: yes, 2001
Hypoptopoma inexspectata is diagnosed and redescribed based on the examination of additional material and comparison with its congeners. This poorly known hypoptopomine species is distributed in the Paraguay and Paraná river draínages.
Aquino, Adriana E.   +1 more
core   +1 more source

Histological evidence for a supraspinous ligament in sauropod dinosaurs [PDF]

open access: yes, 2015
Supraspinous ossified rods have been reported in the sacra of some derived sauropod dinosaurs. Although different hypotheses have been proposed to explain the origin ofthis structure, histological evidence has never been provided to support or reject any
Abdalla O   +37 more
core   +2 more sources

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

open access: yesThe Anatomical Record, EarlyView.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

Aneides hardii [PDF]

open access: yes, 2019
Number of pages=23Geological SciencesIntegrative ...
Scarpetta, Simon G.
core   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

open access: yesThe Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom   +4 more
wiley   +1 more source

Variability of developmental timings of the knee in young American children as assessed through Pyle and Hoerr's radiographic atlas [PDF]

open access: yes, 2015
This study examines the accuracy of the Pyle and Hoerr radiographic atlas technique in an effort to document the extent of normal variation associated with developmental timings in the knee for purposes of age estimation.
Gallagher, John   +2 more
core   +3 more sources

Novel application of gamification to support undergraduate anatomy: Student perceptions and performance

open access: yesAnatomical Sciences Education, EarlyView.
Abstract Anatomy is a foundational component of various medical and paramedical disciplines. Existing research has suggested that games or game elements can improve student interest in musculoskeletal (MSK) anatomy. This project builds on previous gamification and serious game work and incorporates new anatomy‐based games into undergraduate anatomy ...
Emmeline Berger   +2 more
wiley   +1 more source

Digital dissection of the model organism Xenopus laevis using contrast-enhanced computed tomography [PDF]

open access: yes, 2017
The African clawed frog, Xenopus laevis, is one of the most widely used model organisms in biological research. However, the most recent anatomical description of X. laevis was produced nearly a century ago.
Ahn   +62 more
core   +2 more sources

Capability Development in the European Medicines Regulatory Network—A European Learning Needs Analysis and Survey Study

open access: yesClinical Pharmacology &Therapeutics, EarlyView.
The European Medicines Regulatory Network plays a critical role in safeguarding public health through the assessment and supervision of human medicines. However, rapid scientific and technological advancements have exposed capability deficits across the network, threatening timely and effective regulatory decision‐making.
Naomi Beard   +4 more
wiley   +1 more source

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