Results 51 to 60 of about 393 (152)

Semicircular canals in Anolis lizards: ecomorphological convergence and ecomorph affinities of fossil species [PDF]

Royal Society Open Science, 2017
Anolis lizards are a model system for the study of adaptive radiation and convergent evolution. Greater Antillean anoles have repeatedly evolved six similar forms or ecomorphs: crown-giant, grass-bush, twig, trunk, trunk-crown and trunk-ground.
Blake V. Dickson, Emma Sherratt, Jonathan B. Losos, Stephanie E. Pierce   +3 more
doaj   +1 more source

Postcranial anatomy and osteohistology of an early prozostrodont cynodont from the Upper Triassic of Brazil

The Anatomical Record, EarlyView.
Abstract Prozostrodon brasiliensis, a probainognathian cynodont of the clade Prozostrodontia, is recognized as a key taxon for understanding the origin of Mammaliaformes and mammals. Despite detailed investigations of its cranial anatomy, the postcranial skeleton has received comparatively less attention.
Iasmim M. Michelotti, Lívia Roese‐Miron, Brodsky Dantas Macedo Farias, Marina Bento Soares, Leonardo Kerber   +4 more
wiley   +1 more source

Exceptional preservation informs the paleobiology of tapinocephalid dinocephalians

The Anatomical Record, EarlyView.
Abstract The tapinocephalid dinocephalian Moschops is one of the most iconic taxa of the middle Permian, yet its paleobiology remains one of the least well‐known. Here, we address some aspects of paleoneurology and paleobiology of Moschops using CT scanning of four well preserved skulls from the upper Abrahamskraal Formation of South Africa. Two of the
Julien Benoit, Lars Schmitz, Kenneth D. Angielczyk, Luke A. Norton, Andrew D. Bolton, Adam Midzuk, Roger M. H. Smith   +6 more
wiley   +1 more source

A Questionnaire-Derived Prediction Nomogram for Affected Semicircular Canal and Laterality of Benign Paroxysmal Positional Vertigo

Diagnostics
Objective: To investigate whether a detailed historical questionnaire can predict the affected semicircular canal and lateralization in patients with benign paroxysmal positional vertigo (BPPV).
Linlin Wang, Kaijun Xia, Yangming Leng, Renhong Zhou, Jingjing Liu, Hongchang Wang, Hongjun Xiao, Bo Liu   +7 more
doaj   +1 more source

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

The Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe, Hallie P. Street‐Sampson, Takuya Konishi, Michael W. Caldwell   +3 more
wiley   +1 more source

Redescription of the cranial morphology of Amphisbaena braestrupi and Amphisbaena laurenti (Squamata: Amphisbaenidae) from the Pleistocene of Brazil using x‐ray computed tomography

The Anatomical Record, EarlyView.
Abstract Amphisbaenians (Squamata: Amphisbaenidae) are fossorial reptiles with highly specialized cranial morphology, yet their fossil record is frequently limited by fragmentary preservation. This study provides a detailed osteological redescription of the skulls of Amphisbaena braestrupi and Amphisbaena laurenti from the Pleistocene of Lagoa Santa ...
Carolina L. Paiva, Henrique C. Costa, Christy A. Hipsley   +2 more
wiley   +1 more source

Guide the diagnosis and treatment of benign paroxysmal positional vertigo from the perspective of vestibular pathophysiology

Chinese Journal of Contemporary Neurology and Neurosurgery, 2019
This paper aims to explain the clinical features of benign paroxysmal positional vertigo (BPPV), the most common peripheral vertigo disease, from the view of vestibular pathophysiology.
Jian-hua ZHUANG
doaj  

Gradient p‐p Orbital Hybridization in Bismuth‐Doped Crystalline Carbon Nitride for Dual‐Functional Carbon‐to‐Carbon Valorization

EcoEnergy, EarlyView.
Schematic illustration comparing the charge transfer dynamics and catalytic reaction over the (left) pristine carbon nitride and (right) Bi‐doped carbon nitride photocatalysts. In the pristine system, random charge diffusion and rapid recombination limit catalytic efficiency. In contrast, the Bi‐doped system establishes a robust internal electric field
Joel Jie Foo, Valerine Khoo, Zi‐Jing Chiah, Sue‐Faye Ng, Xianhai Zeng, Wee‐Jun Ong   +5 more
wiley   +1 more source

Analysis of etiology and clinical features of spontaneous downbeat nystagmus: a retrospective study

Frontiers in Neurology
ObjectiveTo investigate the topical diagnosis, possible etiology and mechanism of spontaneous downbeat nystagmus (sDBN) patients with dizziness/vertigo.MethodsThe clinical features of dizziness/vertigo patients accompanied with DBN were retrospectively ...
Sai Zhang, Yilin Lang, Wenting Wang, Yuexia Wu, Shuangmei Yan, Ting Zhang, Dong Li, Shaona Liu, Yongci Hao, Xu Yang, Ping Gu   +10 more
doaj   +1 more source

New geochronological constraints on Late Pleistocene glaciation in the southern Cadí Massif, SE Pyrenees

Journal of Quaternary Science, EarlyView.
ABSTRACT The Cadí Massif (42°17′09″ N, 1°38′11″ E; 2649 m a.s.l.) in the southeastern Pyrenees preserves clear evidence of Late Pleistocene glaciation, although previous research has focused almost exclusively on its northern slope. By contrast, the southern slope has remained largely unexplored.
M. Oliva, J. Ventura, A. Çiner, M. A. Sarıkaya, J. Bonsoms, K. M. Wilcken   +5 more
wiley   +1 more source