Results 91 to 100 of about 151,544 (302)

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Trophic ecology of the Endangered Darwin's frog inferred by stable isotopes [PDF]

, 2018
Indexación: Scopus.Acknowledgements. We thank Dr. Mauricio González-Chang for his contribution to invertebrate identification and Sally Wren for the revision of an earlier version of the manuscript. We are also extremely grateful to Tomás Elgueta Alvarez
Alvarado-Rybak, M., Klarian, S., Molina-Burgos, B.E., Soto-Azat, C., Valenzuela-Sánchez, A.   +4 more
core   +1 more source

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

The Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source

New records of amphibians from Ha Tinh Province, Vietnam [PDF]

Biodiversity Data Journal
Since the establishment of the Vu Quang National Park in 2002 in Ha Tinh Province, central Vietnam, several surveys on the amphibian fauna have been undertaken in this protected area. In 2009, Nguyen et al. provided a list of 23 amphibian species from Vu
Vinh Dau, Cuong Pham, Truong Quang Nguyen, Toan Thai, Anh Tran, Anh Pham   +5 more
doaj   +3 more sources

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

The Anatomical Record, EarlyView.
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, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

The Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox, Kenneth D. Rose, Rachel H. Dunn, Kishor Kumar, Rajendra S. Rana, Ashok Sahni, Lachham Singh, Thierry Smith, Jordan W. Crowell   +8 more
wiley   +1 more source

Clinical Physical Exam Shows High Sensitivity for Detecting Labral Tears in Individuals With Femoroacetabular Impingement Syndrome

Arthroscopy, EarlyView.
Purpose To determine the diagnostic performance of the combined use of radiographs and physical exam findings, compared with magnetic resonance arthrography (MRA) alone, for the primary diagnosis of labral tears in individuals with femoroacetabular impingement syndrome.
Carson Halliwell, Rebecca Moyer, George Konstantinidis, Eyal Amar, Ivan Wong   +4 more
wiley   +1 more source

The Soul of the Frog for a Postmodern Age

Zygon
The history of modern science bears abundant witness to the fact that the humble frog has yielded myriad insights into the intricacies of anatomy and physiology far beyond frogs, producing several Nobel laureates in the process.
Gordon Lynn Miller
doaj   +2 more sources

Resistance to Axial Traction Decreases Over Time Following Repaired Periportal Capsulotomies During Hip Arthroscopy

Arthroscopy, EarlyView.
Purpose To determine if distraction distance changes on an axial traction examination between the time zero capsular repair state and a later follow‐up traction examination in patients with staged bilateral hip arthroscopies for femoroacetabular impingement syndrome.
Benjamin T. Johnson, Zoe D. Trutner, Allan K. Metz, Richard N. Puzzitiello, William L. Johns, Joseph Featherall, Stephen K. Aoki   +6 more
wiley   +1 more source

ANK1 and EPB41 Variants and the Risk of Steroid‐Induced Osteonecrosis

Arthritis &Rheumatology, EarlyView.
Objective Steroid‐induced osteonecrosis of the femoral head (SONFH) is a refractory skeletal disorder influenced by genetic and environmental factors. However, conclusive pathogenic genetic evidence remains elusive due to the limited exploration of rare damaging variants. In this study, we aimed to identify rare variants associated with SONFH.
Shengbao Chen, Xianmin Zhu, Zhongzhong Chen, Wei Chen, Hussam Alkaissi, Zeng Zhang, Yun Gao, Junhui Yin, Xiangtian Yu, Qiong Fu, Youshui Gao, Zhenzhong Zhu, Qianying Cai, Pengwei Zhang, Weibin Chen, Xin Zhao, Xiaojin Wu, Karel Pacak, Dongxu Jin, Chunde Bao, Zhengping Zhuang, Changqing Zhang   +21 more
wiley   +1 more source