Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
61
datasets available to search
ShareScore release 0.9.0
Dataset results
61 results for “head shape”
Рис. 1. Seychelliceps cooperi comb. nov., ЗММУ № 23252, 155 мм SL (1, 3, 5, 7, 9) и Suggrundus macracanthus, ИОРАН, Вьетнам, заΛ. Нячанг, 124 мм SL (2, 4, 6, 8, 10, 11), ΑетаΛи строения: 1, 2 — верхний преоперкуΛярный шип; 3, 4 — гребешки и/иΛи бугорки костей крыши черепа в загΛазничной части; 5, 6 — заΑний конец премаксиΛΛярных зубных Λент; 7, 8 — форма небных зубных Λент; 9, 10 — чешуи преΑорсаΛьной обΛасти; 11 — восьмая чешуйка боковой Λинии (окрашена аΛизарином красным S). Масштаб: 1, 2, 4, 7, 8 — 2,5 мм (7, 8 — Λинейка общая); 3 — 5 мм; 5, 9, 10 — 3 мм; 6 — 2 мм; 11 — 0,3 мм Fig. 1. Seychelliceps cooperi comb. nov., ZMMU no. 23252, 155 mm SL (1, 3, 5, 7, 9) and Suggrundus macracanthus, IORAS, Vietnam, Nha Trang Bay, 124 mm SL (2, 4, 6, 8, 10, 11), details: 1, 2 — uppermost preopercular spine; 3, 4 — crests and/or tubercles of cranial roofing bone in postorbital portion of head; 5, 6 — posterior ending of premaxillary tooth band; 7, 8 — shape of tooth band on palatine; 9, 10 — predorsal scales; 11 — eighth scale of lateral line (stained by alizarine red S). Scale bars: 1, 2, 4, 7, 8 — 2.5 mm (7, 8 — common bar); 3 — 5 mm; 5, 9, 10 — 3 mm; 6 — 2 mm; 11 — 0.3 mm in Of The Genus (Teleostei: Scorpaeniformes)
Рис. 1. Seychelliceps cooperi comb. nov., ЗММУ № 23252, 155 мм SL (1, 3, 5, 7, 9) и Suggrundus macracanthus, ИОРАН, Вьетнам, заΛ. Нячанг, 124 мм SL (2, 4, 6, 8, 10, 11), ΑетаΛи строения: 1, 2 — верхний преоперкуΛярный шип; 3, 4 — гребешки и/иΛи бугорки костей крыши черепа в загΛазничной части; 5, 6 — заΑний конец премаксиΛΛярных зубных Λент; 7, 8 — форма небных зубных Λент; 9, 10 — чешуи преΑорсаΛьной обΛасти; 11 — восьмая чешуйка боковой Λинии (окрашена аΛизарином красным S). Масштаб: 1, 2, 4, 7, 8 — 2,5 мм (7, 8 — Λинейка общая); 3 — 5 мм; 5, 9, 10 — 3 мм; 6 — 2 мм; 11 — 0,3 мм Fig. 1. Seychelliceps cooperi comb. nov., ZMMU no. 23252, 155 mm SL (1, 3, 5, 7, 9) and Suggrundus macracanthus, IORAS, Vietnam, Nha Trang Bay, 124 mm SL (2, 4, 6, 8, 10, 11), details: 1, 2 — uppermost preopercular spine; 3, 4 — crests and/or tubercles of cranial roofing bone in postorbital portion of head; 5, 6 — posterior ending of premaxillary tooth band; 7, 8 — shape of tooth band on palatine; 9, 10 — predorsal scales; 11 — eighth scale of lateral line (stained by alizarine red S). Scale bars: 1, 2, 4, 7, 8 — 2.5 mm (7, 8 — common bar); 3 — 5 mm; 5, 9, 10 — 3 mm; 6 — 2 mm; 11 — 0.3 mm
Fig. 1. Figure 1. Representative Spinicaudata and their typical head shapes. A in Pseudosesarma crassimanum
Fig. 1. Figure 1. Representative Spinicaudata and their typical head shapes. A) Ozestheria altus Shu et al., 2015, male head left lateral view; B) Cyzicus californicus (Packard, 1874), female head left lateral view; C) Ozestheria pilosa (Rogers et al., 2013), male head left lateral view; D) Leptestheria kunmingensis Shu et al., 2015, male head left lateral view; E) L. kunmingensis Shu, et al., 2015, female head left lateral view; F) Eocyzicus taiwanensis Rogers et al., 2017, male head left lateral view; G) Ozestheria sp. "Mongolia", DCR collection 729, male head left lateral view; H) Ozestheria sp. "Mongolia", DCR collection 729, male limb I endopod distal portion, right lateral view; I) Metalimnadia sp. DCR collection 853, male head left lateral view; J) Eoleptestheria cf. ticinensis from Australia, male head left lateral view. Designations: f = fornix; on = occipital notch; oc = occipital condyle; rs = rostral spine; r = rostrum.
Figure 3 in Shape variation in head scales of species of the genus Ophiomorus DUMÉRIL & BIBRON, 1839 in Iran, a geometric morphometrics approach
Figure 3. Photos of the species of the genus Ophiomorus in Iran: O. tridactylus (A), O. brevipes (B), O. nuchalis (C), O. persicus (D), O. blanfordii (E), and O. streeti (F).
Figure 1. The genus Ophiomorus currently comprises 12 in Shape variation in head scales of species of the genus Ophiomorus DUMÉRIL & BIBRON, 1839 in Iran, a geometric morphometrics approach
Figure 1. The genus Ophiomorus currently comprises 12 extant species and distribution from southeastern Europe (mainland of Greece) to western India (Camaiti et al., 2019).
Figure 6 in Shape variation in head scales of species of the genus Ophiomorus DUMÉRIL & BIBRON, 1839 in Iran, a geometric morphometrics approach
Figure 6. Above wireframe graph in PC2 and scatter plot resulting from the between-group principal components analysis on specimens of the genus Ophiomorus.
Figure 5 in Shape variation in head scales of species of the genus Ophiomorus DUMÉRIL & BIBRON, 1839 in Iran, a geometric morphometrics approach
Figure 5. Landmarks that were used on the intersection of dorsal head scales in Ophiomorus. For detailed definitions of each landmark see Appendix 2.
Linking micro and macroevolution of head shape in an island radiation
<p>Phenotypic traits have been shown to evolve in response to variation in the environment. However, the evolutionary processes underlying the emergence of phenotypic diversity can typically only be understood at the population level. Consequently, how subtle phenotypic differences at the intraspecific level can give rise to larger-scale changes in performance and ecology remains poorly understood. We here tested for the covariation between ecology, bite force, jaw muscle architecture, and the three-dimensional shape of the cranium and mandible in 16 insular populations of the lizards <i>Podarcis melisellensis</i> and <i>P. sicula</i>. We then compared the patterns observed at the among-population level with those observed at the interspecific level. We found that three-dimensional head shape as well as jaw musculature evolve similarly under similar ecological circumstances. Depending on the type of food consumed or on the level of sexual competition, different muscle groups were more developed and appeared to underlie changes in cranium and mandible shape. Our findings show that the local selective regimes are primary drivers of phenotypic variation resulting in predictable patterns of form and function. Moreover, intraspecific patterns of variation were generally consistent with those at the interspecific level, suggesting that microevolutionary variation may translate into macroevolutionary patterns of ecomorphological diversity.</p>
Text-fig. 5. Reyispermum parvum gen. et sp. nov. seeds from the Early Cretaceous Vale de Água locality, Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). a) Holotype (S174178; Vale de Agua sample 141) in lateral view showing shape and cell pattern; remains of mounting media (¤). b) Cut volume rendering of seed (cut at yz0553) showing the slightly raised tissue immediately adjacent to the lower edge of the hilum (arrow head) and palisade-shaped cells of exotesta. c) Apical view of seed showing hilar depression (hi), position of micropylar slit (mi) and the slightly raised raphal ridge (ra). d) Seed in lateral view showing raised tissue immediately adjacent to the lower edge of the hilum (arrow head) (S174495, Vale de Água sample 300). e) Cut volume rendering (cut at yz0500) of the seed in (5d) showing the raised tissue (arrow head) immediately adjacent to the lower edge of the hilum and sclerenchyma cells of exotesta. f) Detail of seed in (5d) showing micropylar slit (mi), hilum (hi) and raised tissue (arrow head) immediately adjacent to the lower edge of the hilum. g, h) Seed in lateral view (g) and view towards raphe (h) showing seed shape, the raised tissue below hilum (arrow head) and the raphal ridge (ra); note pointed micropylar area (S174179, Vale de Água sample 141). i) Seed surface of seed in (5d) showing the raised outlines of the undulate anticlinal walls of the exotestal cells. Scale bars = 250 µm (a–e, g, h); 125 µm (f, i). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal
Text-fig. 5. Reyispermum parvum gen. et sp. nov. seeds from the Early Cretaceous Vale de Água locality, Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). a) Holotype (S174178; Vale de Agua sample 141) in lateral view showing shape and cell pattern; remains of mounting media (¤). b) Cut volume rendering of seed (cut at yz0553) showing the slightly raised tissue immediately adjacent to the lower edge of the hilum (arrow head) and palisade-shaped cells of exotesta. c) Apical view of seed showing hilar depression (hi), position of micropylar slit (mi) and the slightly raised raphal ridge (ra). d) Seed in lateral view showing raised tissue immediately adjacent to the lower edge of the hilum (arrow head) (S174495, Vale de Água sample 300). e) Cut volume rendering (cut at yz0500) of the seed in (5d) showing the raised tissue (arrow head) immediately adjacent to the lower edge of the hilum and sclerenchyma cells of exotesta. f) Detail of seed in (5d) showing micropylar slit (mi), hilum (hi) and raised tissue (arrow head) immediately adjacent to the lower edge of the hilum. g, h) Seed in lateral view (g) and view towards raphe (h) showing seed shape, the raised tissue below hilum (arrow head) and the raphal ridge (ra); note pointed micropylar area (S174179, Vale de Água sample 141). i) Seed surface of seed in (5d) showing the raised outlines of the undulate anticlinal walls of the exotestal cells. Scale bars = 250 µm (a–e, g, h); 125 µm (f, i).
Text-fig. 6. Reyispermum parvum gen. et sp. nov. seeds from the Early Cretaceous Vale de Água locality, Portugal (a, b, d, e: sample 141, c: sample 300); Synchrotron radiation X-ray tomographic microscopy (SRXTM, orthoslices). a) Longitudinal orthoslice (yz0563) through the median plane of the seed (holotype, S174178) showing the palisade-shaped cells of exotesta and collapsed inner parts of seed coat, raised exotestal tissue (arrow head) immediately adjacent to the lower edge of the hilum (hi), micropyle (mi) and remains of cellular nutritive tissue. b) Longitudinal orthoslice (xz0659) through the micropylar region perpendicular to the median plane showing the exotestal tissue surrounding the transverse micropyle slit (mi). c) Longitudinal orthoslice (yz0500) through the median plane of the seed (S175095) showing raised tissue (arrow head) immediately adjacent to the lower edge of the hilum (hi), micropyle (mi) and poorly preserved cells of the seed coat. d) Longitudinal orthoslice (xz0810) through middle part of seed perpendicular to the median plane (S174178) showing seed coat and remains of cellular nutritive tissue. e) Tangential and longitudinal orthoslice (xz0162) through the seed coat of holotype (S174178) showing thickened, undulate cell walls of exotesta (ex) and the short, thin-walled cells of tegmen (te) with a finely striate wrinkled surface. Scale bars = 250 µm (a, c, d); 125 µm (b, e). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal
Text-fig. 6. Reyispermum parvum gen. et sp. nov. seeds from the Early Cretaceous Vale de Água locality, Portugal (a, b, d, e: sample 141, c: sample 300); Synchrotron radiation X-ray tomographic microscopy (SRXTM, orthoslices). a) Longitudinal orthoslice (yz0563) through the median plane of the seed (holotype, S174178) showing the palisade-shaped cells of exotesta and collapsed inner parts of seed coat, raised exotestal tissue (arrow head) immediately adjacent to the lower edge of the hilum (hi), micropyle (mi) and remains of cellular nutritive tissue. b) Longitudinal orthoslice (xz0659) through the micropylar region perpendicular to the median plane showing the exotestal tissue surrounding the transverse micropyle slit (mi). c) Longitudinal orthoslice (yz0500) through the median plane of the seed (S175095) showing raised tissue (arrow head) immediately adjacent to the lower edge of the hilum (hi), micropyle (mi) and poorly preserved cells of the seed coat. d) Longitudinal orthoslice (xz0810) through middle part of seed perpendicular to the median plane (S174178) showing seed coat and remains of cellular nutritive tissue. e) Tangential and longitudinal orthoslice (xz0162) through the seed coat of holotype (S174178) showing thickened, undulate cell walls of exotesta (ex) and the short, thin-walled cells of tegmen (te) with a finely striate wrinkled surface. Scale bars = 250 µm (a, c, d); 125 µm (b, e).
Text-fig. 7. Lusitanispermum choffatii gen. et sp. nov. seeds from the Early Cretaceous Famalicão locality (sample 025), Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). a) Holotype; seed in lateral view showing seed shape; note that the seed is broken near the lower surface of the hilum (S174345). b) Oblique apical view of micropylar-hilar region of holotype showing slightly ruptured micropylar slit (mi) in the outer integument and two bulging and abraded areas (arrow heads) close to hilum. c) Seed in oblique lateral-raphal view showing the two bulging structures (arrow heads) immediately adjacent to the lower edge of the hilum (S174472). d) Tangential, longitudinal cut (cut at yz0131) through the seed coat of seed in (7c) showing the undulate anticlinal cell walls of the exotesta cells that are thickest towards the outside and thinner towards the inside. Scale bars = 500 µm (a–c); 250 µm (d). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal
Text-fig. 7. Lusitanispermum choffatii gen. et sp. nov. seeds from the Early Cretaceous Famalicão locality (sample 025), Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, volume renderings). a) Holotype; seed in lateral view showing seed shape; note that the seed is broken near the lower surface of the hilum (S174345). b) Oblique apical view of micropylar-hilar region of holotype showing slightly ruptured micropylar slit (mi) in the outer integument and two bulging and abraded areas (arrow heads) close to hilum. c) Seed in oblique lateral-raphal view showing the two bulging structures (arrow heads) immediately adjacent to the lower edge of the hilum (S174472). d) Tangential, longitudinal cut (cut at yz0131) through the seed coat of seed in (7c) showing the undulate anticlinal cell walls of the exotesta cells that are thickest towards the outside and thinner towards the inside. Scale bars = 500 µm (a–c); 250 µm (d).
Figure 9. Mapped and reconstructed soldier head shapes positioned across a Termitidae phylogeny. Nodes a–g in Termite soldier defence strategies: a reassessment of Prestwich's classification and an examination of the evolution of defence morphology using extended eigenshape analyses of head morphology
Figure 9. Mapped and reconstructed soldier head shapes positioned across a Termitidae phylogeny. Nodes a–g are referred to in the text.
Linking micro and macroevolution of head shape in an island radiation
Open the record for dataset details and reuse information.
Bone plaque in the shape of a bull's head
Bone plaque in the shape of a bull's head from Bilche Zolote ID no.: MAK/8475 Museum: Archaeological Museum in Kraków https://muzea.malopolska.pl/en/objects-list/630 Digitalisation: RDW MIC, Małopolska's Virtual Museums project Source: Objaverse 1.0 / Sketchfab
Architectural detail in the shape of head
he presented sculpted architectural element was supposed to act as a cantilever supporting the cornice crowning the body of the church or monastery buildings. At the front, the ashlar was carved in the form of a cantilever with a sculpted female head featuring a flattened, generic shape, but with convex eyes. The head is topped with a stylised crenelated crown (Latin corona muralis). On the left there is a fragment of the arcade theme visible. The rudimentary development of the face and unworked side surfaces indicate that the element was not finished. Architectural detail in the shape of a woman's head 13th century, Tyniec Museum of the Benedictine Abbey in Tyniec Inventory number: DA/181/2012 Source: Objaverse 1.0 / Sketchfab
Head-shaped kantharos
Head-shaped kantharos in the Academic Art Museum Bonn (Inv. Nr. 544) * Object: Red-figured, double head-shaped kantharos in form of Heracles and a woman. * Find spot: unknown * Place of production: Attica * Dating: 480 - 460 BC * Hardware: Nikon D7500, Nikon 40 mm macro * Software: RealityCapture, Substance Designer, Blender Source: Objaverse 1.0 / Sketchfab
Sexual dimorphism in size and shape of the head in the sea snake Emydocephalus annulatus
<p>In snakes, divergence in head size between the sexes has been interpreted as an adaptation to intersexual niche divergence. By overcoming gape-limitation, a larger head enables snakes of one sex to ingest larger prey items. Under this hypothesis, we do not expect a species that consumes only tiny prey items to exhibit sex differences in relative head size, or to show empirical links between relative head size and fitness-relevant traits such as growth and fecundity. Our field studies on the sea snake <i>Emydocephalus annulatus</i> falsify these predictions. Although these snakes feed exclusively on fish eggs, the heads of female snakes are longer and wider than those of males at the same body length. Individuals with wider heads grew more rapidly, reproduced more often, and produced larger litters. Thus, head shape can affect fitness and can diverge between the sexes even without gape-limitation. Head size and shape may facilitate other aspects of feeding (such as the ability to scrape eggs off coral) and locomotion (hydrodynamics); and a smaller head may advantage the sex that is more mobile, and that obtains its prey in narrow crevices rather than in more exposed situations (i.e., males).</p>
Head shape predicts isotopic diet in anoles and day geckos
<ol> <li>Trophic morphology affects resource acquisition; therefore, species differences in such traits may be informative for inferring resource use overlap and potential species interactions. </li> <li>In lizards, head size and shape determine the size and hardness of prey that can be consumed. Lizards with large differences in head morphology are expected to overlap less in prey use than lizards with more similar traits. </li> <li>Stable isotopes are increasingly being used to describe diet, yet how traditional functional traits affect isotopic diet is often not clear a priori. </li> <li>We measured head size, head shape, 𝛿<sup>15</sup>N, and 𝛿<sup>13</sup>C under controlled resource availability in an enclosure experiment using introduced lizards in Hawaiʻi to test whether functional traits predict isotopic diet. </li> <li>Brown anoles (<em>Anolis</em> <em>sagrei</em>) had the tallest and narrowest heads, the highest values of 𝛿<sup>13</sup>C, and the lowest values of 𝛿<sup>15</sup>N. Gold dust day geckos (<em>Phelsuma</em> <em>laticauda</em>) had the shortest and widest heads, the lowest values of 𝛿<sup>13</sup>C, and the highest values of 𝛿<sup>15</sup>N. Green anoles (<em>Anolis</em> <em>carolinensis</em>) were intermediate in both diet and morphology. </li> <li>As a result of isotopic diet overlap, green anoles have reduced competitor-free resource space in the presence of both of the other lizard species. </li> <li>Head shape was the best predictor of diet and the only trait that explained variation within as well as among species. Head size was sexually dimorphic, and therefore the weaker diet correlations with this trait may be explained by sexual selection.</li> <li>Breadth in morphospace did not correlate with isotopic diet breadth, nor did the amount of overlap in morphospace predict the amount of overlap in isotopic diet space. </li> <li>While lizards were able to locally depress prey in experimental enclosures, no shifts in diet were detected in response to the presence of heterospecifics. </li> <li>The generality of head shape in predicting isotopic diet, and whether it does so independent of habitat use, warrants additional study. Head shape provides a potentially fruitful avenue for trait-based approaches to studying ecology and evolution in lizards.</li> </ol>
Head shape predicts isotopic diet in anoles and day geckos
Open the record for dataset details and reuse information.
Predator-mediated resource limitation shapes body and head size variation in stickleback populations
Open the record for dataset details and reuse information.
Sexual dimorphism in size and shape of the head in the sea snake Emydocephalus annulatus
Open the record for dataset details and reuse information.
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.