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690 results for “Geometric morphometrics”
Figure 3 in Geometric morphometrics of mandibular shape in the dwarf fat-tailed jerboa: relevancy for trinomial taxonomy
Figure 3. Relationship between centroid size (A) or regression scores (B) and longitude for dwarf fat-tailed jerboas (Pygeretmus pumilio). Symbols depict subspecies affiliation; for identities see Figure 1. Best-fit polynomial regression lines show longitudinal trends within the pumilio and the potanini subspecies groups. Coefficients of determination and P-values for regressions are given. The longitudinal belt where subspecies groups and morphological groups overlap is shaded.
Figure 2 in Geometric and traditional morphometrics for the assessment of character state identity: multivariate statistical analyses of character variation in the genus Arrenurus (Acari, Hydrachnidia, Arrenuridae)
Figure 2. Species of Arrenurus (Megaluracarus) included in the morphometric analyses, with cauda in posterior view: (A) Arrenurus anae; (B) Arrenurus colitus; (C) Arrenurus neoexpansus; (D) Arrenurus zitavus; (E) Arrenurus maya; (F) Arrenurus catoi; (G) Arrenurus tabascoensis; (H) Arrenurus anitahoffmannae; (I) Arrenurus urbanus; (J) Arrenurus olmeca; (K) Arrenurus costeroae. The pairs of ventroglandularia V1, V2, and V3 in (F) are indicated with arrows pointing at gland openings and setae insertions. Scale bars: 100 µm.
Figure 7 in Geometric morphometric analysis of shell shape variation in Conus (Gastropoda: Conidae)
Figure 7. Plot of the results of the canonical variate analysis of scores on principal components 1–4 from landmark analysis.
Figure 5 in Dealing with allometry in linear and geometric morphometrics: a taxonomic case study in the Leporinus cylindriformis group (Characiformes: Anostomidae) with description of a new species from Suriname
Figure 5. Radiograph of holotype of Leporinus cylindriformis, MCZ 20430, 188.0 mm standard length, showing position of 21 landmarks used in geometric morphometric analysis. Landmarks represent: (1) anterior limit of premaxilla; (2) dorsal tip of ascending process of premaxilla; (3) epiphyseal bar; (4) posterodorsal tip of supraoccipital; (5) origin of first dorsal-fin ray; (6) insertion of last dorsal-fin ray; (7) origin of adipose fin; (8) posterior extent of vertebral column and anterior of hypural plate, marked at midpoint of last vertebral centrum; (9) insertion of last anal-fin ray; (10) origin of first anal-fin ray; (11) pelvic-fin origin; (12) pectoral-fin origin; (13) ventral limit of joint between contralateral cleithra; (14) anguloarticular-quadrate joint; (15) anterior tip of dentary; (16) anterior limit of orbit; (17) dorsal limit of orbit; (18) posterior limit of orbit; (19) ventral limit of orbit; (20) joint between basioccipital and first vertebra of Weberian apparatus; (21) anterior limit of fifth vertebra (first vertebra not incorporated into Weberian apparatus and first bearing full sized pleural ribs). Image © President and Fellows of Harvard College.
Figure 4 in Dealing with allometry in linear and geometric morphometrics: a taxonomic case study in the Leporinus cylindriformis group (Characiformes: Anostomidae) with description of a new species from Suriname
Figure 4. Leporinus apollo sp. nov., MHNG 2673.002, paratype, 48.6 mm standard length; Suriname, Corantijn River, Kaw Falls (04°59′48.3″N, 57°37′49.5″W).
Figure 2 in Dealing with allometry in linear and geometric morphometrics: a taxonomic case study in the Leporinus cylindriformis group (Characiformes: Anostomidae) with description of a new species from Suriname
Figure 2. Leporinus sp., INPA 15405, 115.9 mm standard length; Brazil, Rondônia, Rio Ucupá at Ji Parana. Right of specimen photographed with image reversed to place head at left. Previously considered conspecific with Leporinus cylindriformis.
Figure 1 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 1. Two extinct marine crocodylians, and an ichthyosaur, showing the extensive morphological adaptations to a pelagic lifestyle in metriorhynchids: Platysuchus SMNS 9930 (A), a teleosaurid, displays the comparatively heavier body typical of semi-aquatic teleosaurids, goniopholidids, pholidosaurids and eusuchians; in contrast to the hydrodynamic metriorhynchids, such as Cricosaurus suevicus SMNS 9808 (B). The ichthyosaur Stenopterygius SMNS 81841 (C) has similar adaptations to metriorhynchids, i.e. hydrofoil-like forelimbs, hypocercal tail, and the reduction in limb girdle size. Scale bar = 50 mm.
Figure 11. A in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 11. A, relative warps cranial morphology morphospace, delimited by the first two axes. B, shape changes corresponding to the mean shape, and the extremes of both of the first two axes.
Figure 10 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
Figure 10. Dorsal view of a generalized metriorhynchid skull, with the landmarks measured shown (see Table 4). Image redrawn from Frey et al. (2002).
Figure 4. 3D in Cranial variation between coastal and offshore boưlenose dolphins, Tursiops truncatus (Cetacea: Delphinidae) in Ecuador and the Mediterranean: a three-dimensional geometric morphometric study
Figure 4. 3D PCA morphospace generated from the automatic landmarking procedure, with samples categorized by a priori groups. Shaded areas correspond to 90% kernel density clouds for each cluster, as calculated in the R package KS (Duong 2007). Line graphs around the PCA plot represent vector displacement graphs, which represent the difference in landmark position between the mean landmark configuration and specimens grouped along the positive PC1 (A), PC2 (B), and PC3 (C). Darker colour shows a higher rate of shape change for the corresponding landmark.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.