Results 101 to 110 of about 391,721 (226)

Early synapsids neurosensory diversity revealed by CT and synchrotron scanning

open access: yesThe Anatomical Record, EarlyView.
Abstract Non‐mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe ...
J. Benoit   +6 more
wiley   +1 more source

Myological and osteological approaches to gape and bite force reconstruction in Smilodon fatalis

open access: yesThe Anatomical Record, EarlyView.
Abstract Masticatory gape and bite force are important behavioral and ecological variables. While much has been written about the highly derived masticatory anatomy of Smilodon fatalis, there remains a great deal of debate about their masticatory behaviors.
Ashley R. Deutsch   +5 more
wiley   +1 more source

The thoracic anatomy of Pselaphus heisei (Pselaphinae, Staphylinidae, Coleoptera)

open access: yesJournal of Morphology, Volume 284, Issue 1, January 2023., 2023
Upper part: SEM micrographs of Pselaphus heisei, lateral view; Lower part: 3D reconstructions of thoracic muscles of Pselaphus heisei, mesal view. Abstract We document external and internal thoracic structures of the free‐living pselaphine beetle Pselaphus heisei (Pselaphitae) using a set of traditional and modern techniques.
Xiao‐Zhu Luo   +2 more
wiley   +1 more source

Predicting ecology and hearing sensitivities in Parapontoporia—An extinct long‐snouted dolphin

open access: yesThe Anatomical Record, EarlyView.
Abstract Analyses of the cetacean (whale and dolphin) inner ear provide glimpses into the ecology and evolution of extinct and extant groups. The paleoecology of the long‐snouted odontocete (toothed whale) group, Parapontoporia, is primarily marine with its depositional context also suggesting freshwater tolerance.
Joyce Sanks, Rachel Racicot
wiley   +1 more source

A unique case of commensalism: The beaver beetle Platypsyllus castoris (Leiodidae, Coleoptera) and its morphological adaptations

open access: yesJournal of Morphology, Volume 284, Issue 1, January 2023., 2023
We document in detail the morphology of adults of the beaver beetle Platypsyllus castoris with modern techniques, and interpret evolutionary changes linked with the specific life style of the beetle in the fur of the beaver. Platypsyllus displays numerous structural specializations which ensure mechanical stabilization, firm anchorage on the host, and ...
Margarita I. Yavorskaya   +2 more
wiley   +1 more source

Remote Corticotomy Accelerates Orthodontic Tooth Movement in a Rat Model

open access: yesBioMed Research International, 2019
Introduction With an increasing demand for orthodontic treatment for adult patients, orthodontic professionals are constantly seeking novel strategies and technologies that can accelerate tooth movement in order to shorten the treatment period.
Min Zou, Chenshuang Li, Zhong Zheng
semanticscholar   +1 more source

Bioimaging of sense organs and the central nervous system in extant fishes and reptiles in situ: A review

open access: yesThe Anatomical Record, EarlyView.
Bioimaging of the sense organs and brain of fishes and reptiles. Left panel: 3D reconstruction of the head and brain of the deep‐sea viperfish Chauliodus sloani following diceCT. Right panel: A 3D reconstruction of a 70‐day‐old embryo head of the bearded dragon Pogona vitticeps following diceCT, showing the position of the segmented brain within the ...
Shaun P. Collin   +9 more
wiley   +1 more source

Stress Distribution and Tooth Displacement Analysis of Maxillary Molar Distalization by Different Designs of Jig in a Finite Element Study [PDF]

open access: yesJournal of Dentistry
Statement of the Problem: Despite the prevalence of CL.II malocclusion, still the best mechanotherapy for non-extraction treatment is not verified. Purpose: The aim of the present study was to evaluate the stress distribution and tooth displacement ...
Hooman Zarif Najafi   +2 more
doaj   +1 more source

Reassessment of Xenodens calminechari with a discussion of tooth morphology in mosasaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract Xenodens calminechari is a mosasaurid taxon named by Longrich et al. (2021) based on the holotype MHNM.KH.331, a left maxilla with several teeth. This holotype was obtained nonscientifically (without technical supervision) from an area in Morocco that yields many manipulated or forged specimens. Examination of Longrich et al.
Henry S. Sharpe   +2 more
wiley   +1 more source

Effectiveness of surgical procedures in the acceleration of orthodontic tooth movement: Findings from systematic reviews and meta‐analyses

open access: yesJapanese Dental Science Review, 2022
The current overview aimed to summarise the findings provided by systematic reviews (SRs) on the effect of surgical procedures in the acceleration of tooth movement and to assess the methodological quality of the included SRs.
Roberta Gasparro   +6 more
doaj  

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