Results 241 to 250 of about 1,915,047 (283)

Ecomorphological variation in artiodactyl calcanei using 3D geometric morphometrics

The Anatomical Record, 2020
AbstractArtiodactyl postcrania are commonly used as paleoecological indicators but these studies are usually limited to artiodactyls within a single family. Here, we use 3D geometric morphometrics to analyze the morphology of calcanei from five artiodactyl families (Antilocapridae, Bovidae, Cervidae, Giraffidae, and Tragulidae) and identify common ...
Rachel H. Dunn, Jori E. Avery
openaire   +2 more sources

3D geometric morphometrics of thorax variation and allometry in Hominoidea

Journal of Human Evolution, 2017
Ever since the seminal papers of Keith and Schultz, hominoid primate ribcages have been described as either "funnel-" or "barrel-shaped." Following this dichotomic typology, it is currently held that Homo sapiens and hylobatids (gibbons and siamangs) share a barrel-shaped ribcage and that they are more similar to each other than to the funnel-shaped ...
Markus Bastir, Daniel García-Martínez, Scott A. Williams, Wolfgang Recheis, Isabel Torres-Sánchez, Francisco García Río, Motoharu Oishi, Naomichi Ogihara   +7 more
openaire   +3 more sources

Analysis of Hyoid–Larynx Complex Using 3D Geometric Morphometrics

Dysphagia, 2015
The aim of this study was to obtain a quantitative anatomical description of the hyoid bone-larynx complex using modern 3D reconstruction tools. The study was conducted on 104 bones from CT scan images of living adult subjects. Three-dimensional reconstructions were created from CT scan images using AVIZO 6.2 software package.
Loth, Anthony, Corny, Julien, Santini, Laure, Dahan, Laurie, Dessi, Patrick, Adalian, Pascal, Fakhry, Nicolas   +6 more
openaire   +2 more sources

Comparative anatomy and 3D geometric morphometrics of the El Sidrón atlases (C1)

Journal of Human Evolution, 2020
The first cervical vertebra (atlas, C1) is an important element of the vertebral column because it connects the cranial base with the cervical column, thus helping to maintain head posture and contributing to neck mobility. However, few atlases are preserved in the fossil record because of the fragility of this vertebra.
Carlos A. Palancar, Nicole Torres-Tamayo, Daniel García-Martínez, Antonio García-Tabernero, Antonio Rosas, Markus Bastir   +5 more
openaire   +3 more sources

Morphometric evaluations of personalised 3D reconstructions and geometric models of the human spine

Medical and Biological Engineering and Computing, 1997
In the past, several techniques have been developed to study and analyse the 3D characteristics of the human spine: multi-view radiographic or biplanar 3D reconstructions, CT-scan 3D reconstructions and geometric models. Extensive evaluations of three of these techniques that are routinely used at Sainte-Justine Hospital (Montréal, Canada) are ...
C E, Aubin, J, Dansereau, F, Parent, H, Labelle, J A, de Guise   +4 more
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Clavicular curvature and locomotion in anthropoid primates: A 3D geometric morphometric analysis

American Journal of Physical Anthropology, 2015
ABSTRACTObjectives:As a component of the primate shoulder, the clavicle is expected to reflect locomotor adaptations. Whereas previous work has generally focused on clavicular length and torsion, the shape of clavicular curvature may better distinguish taxa and provide additional information about upper limb use in locomotion.
Nicole, Squyres, Valerie Burke, DeLeon
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Eco‐geographic adaptations in the human ribcage throughout a 3D geometric morphometric approach

American Journal of Physical Anthropology, 2018
AbstractObjectivesAccording to eco‐geographic rules, humans from high latitude areas present larger and wider trunks than their low‐latitude areas counterparts. This issue has been traditionally addressed on the pelvis but information on the thorax is largely lacking.
Daniel García‐Martínez, Shahed Nalla, Maria Teresa Ferreira, Ricardo A. Guichón, Manuel D. D'Angelo del Campo, Markus Bastir   +5 more
openaire   +4 more sources

3D Carapace Asymmetry in Tortoises: A Geometric Morphometric Analysis

Journal of Research in Veterinary Medicine
Bilateral symmetry is a defining feature of the tortoise carapace; however, perfect symmetry is rarely achieved in biological systems. This study aimed to quantify bilateral carapace asymmetry in two tortoise species, the Leopard tortoise (Stigmochelys pardalis) and the Greek tortoise (Testudo graeca), using three-dimensional (3D) landmark-based ...
Ebuderda Günay, Yusuf Altundağ, Ermiş Özkan, Burak Ünal, Aycan Korkmazcan, Eyüp Kaan Kaşıkçı, Hadji Chiuta Salimu, Fatma İşbilir   +7 more
openaire   +1 more source

Mandibular shape and diet in extant primates: a 3D geometric morphometric analysis

Anthropologischer Anzeiger
Establishing a link between mandibular morphology and diet in extant primates has long been a goal in biological anthropology because it should provide important insight into the diets of extinct primates, including fossil hominins. To date, efforts to explore this question have produced mixed results, largely perhaps due to a reliance on the use of 2D
Kimberly A, Plomp, Joseph, Owen, Keith, Dobney, Mark, Collard   +3 more
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Femoral curvature in Neanderthals and modern humans: A 3D geometric morphometric analysis

Journal of Human Evolution, 2011
Since their discovery, Neanderthals have been described as having a marked degree of anteroposterior curvature of the femoral shaft. Although initially believed to be pathological, subsequent discoveries of Neanderthal remains lead femoral curvature to be considered as a derived Neanderthal feature.
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