Results 31 to 40 of about 1,915,047 (283)

Testing Species Assignments in Extant Terebratulide Brachiopods: A Three-dimensional Geometric Morphometric Analysis of Long-Looped Brachidia.

open access: yesPLoS ONE, 2019
Species of terebratulide brachiopods have been largely characterized qualitatively on the basis of morphology. Furthermore, species-level morphological variability has rarely been analyzed within a quantitative framework. The objective of our research is
Natalia López Carranza   +1 more
doaj   +1 more source

After the Revolution: A Review of 3D Modelling as a Tool for Stone Artefact Analysis

open access: yesJournal of Computer Applications in Archaeology, 2022
With over 200 peer-reviewed papers published over the last 20 years, 3D modelling is no longer a gimmick but an established and increasingly common analytical tool for stone artefact analysis.
Simon Wyatt-Spratt
doaj   +1 more source

Low resolution scans can provide a sufficiently accurate, cost- and time-effective alternative to high resolution scans for 3D shape analyses [PDF]

open access: yesPeerJ, 2018
Background Advances in 3D shape capture technology have made powerful shape analyses, such as geometric morphometrics, more feasible. While the highly accurate micro-computed tomography (µCT) scanners have been the “gold standard,” recent improvements in
Ariel E. Marcy   +4 more
doaj   +2 more sources

Technical note: Testing different 3D techniques using geometric morphometrics: Implications for cranial fluctuating asymmetry in humans

open access: yes, 2022
This study aimed to test the performance of 3D digitizer, CT scanner, and surface scanner in detecting cranial fluctuating asymmetry. Sets of 32 landmarks (6 in the midline and 13 bilateral) were acquired from 14 archeological crania using a 3D digitizer,
Daniel García‐Martínez   +6 more
core   +1 more source

A Geometric Morphometric Study on Sexual Dimorphism in Viscerocranium

open access: yesBiology, 2022
The level of sexual dimorphism manifested by human bones is an important factor for development of effective sex estimation methods. The aim of the study was to investigate the sexual dimorphism in the size and shape of the viscerocranium using geometric
Diana Toneva   +4 more
doaj   +1 more source

Disentangling biological variability and taphonomy: shape analysis of the limb long bones of the sauropodomorph dinosaur Plateosaurus [PDF]

open access: yesPeerJ, 2020
Sauropodomorph dinosaurs constitute a well-studied clade of dinosaurs, notably because of the acquisition of gigantism within this group. The genus Plateosaurus is one of the best-known sauropodomorphs, with numerous remains from various localities.
Rémi Lefebvre   +3 more
doaj   +2 more sources

Procrustes-based geometric morphometrics on MRI images: An example of inter-operator bias in 3D landmarks and its impact on big datasets. [PDF]

open access: yesPLoS ONE, 2018
Using 3D anatomical landmarks from adult human head MRIs, we assessed the magnitude of inter-operator differences in Procrustes-based geometric morphometric analyses.
Amro Daboul   +4 more
doaj   +1 more source

Applying a geometric morphometric surface semilandmark-based approach for assessing sexual dimorphism in cranial bones

open access: yesRevista Argentina de Antropología Biológica, 2023
Traditionally, sex estimation in human skulls has been carried out applying non-metric and inter-landmark distance approaches. Such estimation has substantially improved with the introduction of geometric morphometric semilandmark-based registration ...
Germán Manríquez   +1 more
doaj   +1 more source

Geometric morphometrics applied to cartography

open access: yes, 2023
International audienceThe morphological differences between two geographical maps can be highlighted by a polycentric distance cartogram resulting from a bidimensional regression.
Roulier, Frédéric
core   +1 more source

Humeral laterality in modern humans and Neanderthals: a 3D geometric morphometric analysis

open access: yesAnthropological Science, 2017
This work was supported by MINECO of Spain, grant nos. CGL2012-36682 and CGL2016-75109-P. L.P.C. has a predoctoral grant, BES-2013-066056, from MINECO, Spain.
PÉREZ-CRIADO, LAURA   +3 more
openaire   +3 more sources

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