scholarly journals Functional signals and covariation in triquetrum and hamate shape of extant primates using 3D Geometric Morphometrics

2021 ◽  
Author(s):  
Marie J. M. Vanhoof ◽  
Lorenzo Galletta ◽  
Isabelle De Groote ◽  
Evie E. Vereecke
Keyword(s):  
Geometric Morphometrics ◽  
3D Geometric Morphometrics

Morphological affinities of the proximal humerus of Epipliopithecus vindobonensis and Pliopithecus antiquus: Suspensory inferences based on a 3D geometric morphometrics approach

2015 ◽  
Vol 80 ◽  
pp. 83-95 ◽  
Author(s):  
Julia Arias-Martorell ◽  
David M. Alba ◽  
Josep M. Potau ◽  
Gaëlle Bello-Hellegouarch ◽  
Alejandro Pérez-Pérez
Keyword(s):  
Geometric Morphometrics ◽  
Proximal Humerus ◽  
3D Geometric Morphometrics

scholarly journals Variability and asymmetry in the shape of the spiny dogfish vagina revealed by 2D and 3D geometric morphometrics

2019 ◽  
Vol 308 (1) ◽  
pp. 16-27 ◽  
Author(s):  
B. P. Hedrick ◽  
P. Antalek‐Schrag ◽  
A. J. Conith ◽  
L. J. Natanson ◽  
P. L. R. Brennan
Keyword(s):  
Geometric Morphometrics ◽  
Spiny Dogfish ◽  
3D Geometric Morphometrics ◽  
2D And 3D

Analysis of Hyoid Bone Using 3D Geometric Morphometrics: An Anatomical Study and Discussion of Potential Clinical Implications

Dysphagia ◽  
2013 ◽  
Vol 28 (3) ◽  
pp. 435-445 ◽  
Author(s):  
Nicolas Fakhry ◽  
Laurent Puymerail ◽  
Justin Michel ◽  
Laure Santini ◽  
Catherine Lebreton-Chakour ◽  
...  
Keyword(s):  
Geometric Morphometrics ◽  
Hyoid Bone ◽  
Anatomical Study ◽  
Clinical Implications ◽  
3D Geometric Morphometrics

scholarly journals Characterizing the body morphology of the first metacarpal in the Homininae using 3D geometric morphometrics

2020 ◽  
Author(s):  
Jonathan Morley ◽  
Ana Bucchi ◽  
Carlos Lorenzo ◽  
Thomas A. Püschel
Keyword(s):  
Geometric Morphometrics ◽  
Precision Grip ◽  
Morphological Characteristics ◽  
Great Apes ◽  
Modern Human ◽  
The Body ◽  
Linear Discriminant ◽  
Homo Neanderthalensis ◽  
3D Geometric Morphometrics ◽  
Fossil Hominins

AbstractObjectivesExtinct hominins can provide key insights into the development of tool use, with the morphological characteristics of the thumb of particular interest due to its fundamental role in enhanced manipulation. This study quantifies the shape of the first metacarpal’s body in the extant Homininae and some fossil hominins to provide insights about the possible anatomical correlates of manipulative capabilities.Materials and methodsThe extant sample includes MC1s of modern humans (n=42), gorillas (n=27) and chimpanzees (n=30), whilst the fossil sample included Homo neanderthalensis, Homo naledi and Australopithecus sediba. 3D geometric morphometrics were used to characterize the overall shape of MC1’s body.ResultsHumans differ significantly from extant great apes when comparing overall shape. H. neanderthalensis mostly falls within the modern human range of variation although also showing a more robust morphology. H. naledi varies from modern human slightly, whereas A. sediba varies from humans to an even greater extent. When classified using a linear discriminant analysis, the three fossils are categorized within the Homo group.DiscussionThe results are in general agreement with previous studies on the morphology of the MC1. This study found that the modern human MC1 is characterized by a distinct suite of traits, not present to the same extent in the great apes, that are consistent with an ability to use forceful precision grip. This morphology was also found to align very closely with that of H. neanderthalensis. H. naledi shows a number of human-like adaptations consistent with an ability to employ enhanced manipulation, whilst A. sediba apparently presents a mix of both derived and more primitive traits.

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