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690 results for “Geometric morphometrics”
Figure 2 in Integrative approach of morphology and geometric morphometrics to species delimiation in Torrenticolidae (Acari: Hydrachnidiae)
Figure 2. Landmark definitions used in the anterior margins of coxae.
Figure 4 in Integrative approach of morphology and geometric morphometrics to species delimiation in Torrenticolidae (Acari: Hydrachnidiae)
Figure 4. Canonical variate analysis (CVA) of dorsoglandularia 1–4.
Figure 5 in Integrative approach of morphology and geometric morphometrics to species delimiation in Torrenticolidae (Acari: Hydrachnidiae)
Figure 5. Canonical variate analysis (CVA) of infracapitulum.
Figure 6 in Classical and geometric morphometric methods reveal differences between specimens of Varroa destructor (Mesostigmata: Varroidae) from seven provinces of Iran
Figure 6. Cluster analysis by UPGMA method based on geometric morphometric measurement.
FIGURE 3. A in Distinguishing between three modern Ellobius species (Rodentia, Mammalia) and identification of fossil Ellobius from Kaldar Cave (Iran) using geometric morphometric analyses of the first lower molar
FIGURE 3. A) Kaldar Cave location. B) Entrance from the south of Kaldar Cave.
Data from: A 3D geometric morphometric analysis of the bovid distal humerus, with special reference to Rusingoryx atopocranion (Pleistocene, Eastern Africa)
<p>The family Bovidae [Mammalia: Artiodactyla] is speciose and has extant representatives on every continent, forming key components of mammal communities. For these reasons, bovids are ideal candidates for studies of ecomorphology. In particular, the morphology of the bovid humerus has been identified as highly related to functional variables such as body mass and habitat. This study investigates the functional morphology of the bovid distal humerus in isolation due to its increased likelihood of preservation in the fossil record, and the resulting opportunity for better understanding the ecomorphology of extinct bovids. A landmark scheme of 30 landmarks was used to capture the 3D distal humerus morphology in 111 extant bovid specimens. We find that the distal humerus has identifiable morphologies associated with body mass, habitat preference, and tribe affiliation, and that some characteristics are shared between high body mass bovids and those living on hard, flat terrain which is likely due to the high stress on the bone in both cases. We directly apply our findings regarding extant bovids to the extinct alcelaphine bovid, <em>Rusingoryx</em> <em>atopocranion</em> from the mid to late Pleistocene (>33-45 ka) Lake Victoria region of Kenya. This species is known for some peculiar morphologies including a domed cranium with hollow nasal crests, and having small hooves for a bovid of its size. Another interesting aspect of <em>Rusingoryx</em>'s skeletal morphology which has not been addressed is an unusual protrusion on the lateral epicondyle of the distal humerus. Despite considerable individual variation in the <em>Rusingoryx</em> specimens, we find evidence to support its historical assignment to the tribe Alcelaphini, and that it likely preferred open grassland habitats, which is consistent with independent reconstructions of the paleoenvironment. We also provide the most accurate body mass estimate for <em>Rusingoryx</em> to date, based on distal humerus centroid size. Overall, we are able to conclude that the distal humerus in extant bovids is highly informative regarding body mass, habitat preference and tribe, and that this can be applied directly to a fossil taxon with promising results.</p>
Reshaping Foramen Magnum Research. Analyzing foramen magnum variation in modern humans using 2D osteometry and 3D geometric morphometrics – A master thesis summary and research review. Supplementary Materials.
<p>This supplementary materials document refers to: <em>Göldner, D., 2024. Reshaping Foramen Magnum Research. Analyzing foramen magnum variation in modern humans using 2D osteometry and 3D geometric morphometrics – A master thesis summary and research review. Mitteilungen der Berliner Gesellschaft für Anthropologie, Ethnologie und Urgeschichte 44 (2023).</em></p> <p> </p> <p> </p>
Fig. 2 in A geometric morphometric study of the wing shapes of Pieris rapae (Lepidoptera: Pieridae) from the Qinling Mountains and adjacent regions: An environmental and distance-based consideration
Fig. 2. Distribution of landmarks on P. rapae forewing and hind wing.
Fig. 2. 60 in Identification and Distribution of Wedge Clams (Donacidae: Bivalvia) in Thailand by Geometric Morphometric and Molecular Analysis.
Fig. 2. 60 Outline digitized landmarks along the inner edge of left valve. Scale bar = 5 mm.
Fig. 7. Reconstructed denticles shapes using a in Geometric morphometric on a new species of Trichodinidae. A tool to discriminate trichodinid species combined with traditional morphology and molecular analysis
Fig. 7. Reconstructed denticles shapes using a range of 20 harmonic.
Fig. 6 in Geometric morphometric on a new species of Trichodinidae. A tool to discriminate trichodinid species combined with traditional morphology and molecular analysis
Fig. 6. Fourier harmonic power spectrum based on Elliptical Fourier analysis.
Raw coordinates of 3D landmarks related to the article 'A new zooarchaeological application for geometric morphometric methods: Distinguishing Ovis aries morphotypes to address connectivity and mobility of prehistoric Central Asian pastoralists' by Haruda et al.
<p>Raw coordinates from 3D landmarks of <em>Ovis aries </em>astragali. These bones originate from Final Bronze Age archaeological contexts from central and southeastern Kazakhstan. These relate to the article 'A new zooarchaeological application for geometric morphometric methods: Distinguishing <em>Ovis aries</em> morphotypes to address connectivity and mobility of prehistoric Central Asian pastoralists' by Haruda et al. </p>
Figure 5 in Chondrocranial differences in Bufotes variabilis (Anura: Bufonidae): geometric morphometric comparison with two anuran species
Figure 5. DFA results in B. variabilis.
Fig. 6 in Fractal analysis of ostracod shell variability: A comparison with geometric and classic morphometrics
Fig. 6. Location of landmarks chose on Krithe valve for shape analysis.
Figure 1. Landmarks and curves selection. A. Fore wing. B. Hind wing. C in Geometric morphometric analysis of Eysarcoris guttiger, E. annamita and E. ventralis (Hemiptera: Pentatomidae)
Figure 1. Landmarks and curves selection. A. Fore wing. B. Hind wing. C. Pygophore.
Figure 3. PCA analysis. A. Fore wing. B. Hind wing. C in Geometric morphometric analysis of Eysarcoris guttiger, E. annamita and E. ventralis (Hemiptera: Pentatomidae)
Figure 3. PCA analysis. A. Fore wing. B. Hind wing. C. Pygophore.
Figure 4. A in Further geometric morphometric analysis on the genus Eysarcoris (Hemiptera: Pentatomidae) from China
Figure 4. A dendogram showing the relationship of the eight species of Eysarcoris.
Figure 1. A in A web based tool to merge geometric morphometric data from multiple characters
Figure 1. A workflow for the method.
Shape data ferrets and polecat (from paper: Gruwier, B.: A geometric morphometric approach to distinguish ferret from polecat and its application to an archaeological specimen from Mechelen (Belgium))
<p>Shape data ferrets and polecat (used in paper: Gruwier, B.: A geometric morphometric approach to distinguish ferret from polecat and its application to an archaeological specimen from Mechelen (Belgium))</p>
Data from: Geometric morphometrics and paleoproteomics in tandem enlighten the paleodiversity of Pongo
<p>This folder contains the data used for the creation of the phylogenetic trees for the manuscript 'Geometric morphometrics and paleoproteomics in tandem enlighten the paleodiversity of Pongo'.</p> <p>Ancient_Sequences.fa is a fasta file containing all palaeoproteomic sequences reconstructed in the context of the above study. (15 fosil pongo samples) </p> <p>'Raw_Reference_Dataset' is a folder containing 9 fasta files. Each fasta contains the reference sequences of multiple samples (6 H.sapiens,27 Pongo, 30 Gorilla, 38 Pan, 2 Macaca, 1 Nomascus, 1 Microcebus, 1 Papio ) for one protein.</p> <p>'Alignments' is a folder containing 9 fasta files with the name of a protein. Each fasta file contains the aligned sequences of the reference dataset and the ancient samples for that protein. Additionally, the fasta file 'CONCATENATED.fa' contains all proteins concatenated, aligned and I/L fixed.</p>
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