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2,356 results for “Echinodermata”
FIGURE 3 in Dendrochirotida (Echinodermata: Holothuroidea) from the northeastern coast of Brazil
FIGURE 3. Parathyone suspecta (Ludwig, 1875), UFPB.ECH-1061. A, rosette from tentacles; B, baskets from tentacles; C, elongated plate from tentacles; D, rods from tentacles; E, baskets from introvert; F, baskets from body wall; G, thick button from body wall; H, buttons from body wall; I, plates from body wall; J, supporting plates from tube feet; K, endplate; L, perforated supporting rod.
FIGURE 1 in Dendrochirotida (Echinodermata: Holothuroidea) from the northeastern coast of Brazil
FIGURE 1. Thyonidium seguroensis (Deichmann, 1930), UFPB.ECH-1997. A, external view of the animal; B, calcareous ring; C, plates from tentacles; D, rods from tentacles; E, rosettes from tentacles; F, rosettes from introvert; G, plate from introvert; H–I, tables from body wall; J, supporting rods from tube feet; K, supporting plate from tube feet; L, endplate.
FIGURE 17. Sthenaster emmae. A. Central Plateau scarp, 870 m. B. Central Plateau Scarp, 874 m C. Central Plateau Scarp, 865 m D in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 17. Sthenaster emmae. A. Central Plateau scarp, 870 m. B. Central Plateau Scarp, 874 m C. Central Plateau Scarp, 865 m D. Richardson's Jellyfish, 865 m
FIGURE 15. Sibognaster bathyheuretor n in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 15. Sibognaster bathyheuretor n. sp. Holotype. USNM 1507293 A. Abactinal surface. Scale bar=5.0 mm. B. Close up abactinal surface. Scale bar=8.0 mm. C. Oral surface. Scale bar=5.0 mm. D. Furrow spination. Scale bar=1.0 mm. E. Lateral view showing marginal plate surface. Scale bar=2.0 mm.
FIGURE 20. Velatida. A. Remaster palmatus. Stetson Mesa Terrace, 445.4 m. B in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 20. Velatida. A. Remaster palmatus. Stetson Mesa Terrace, 445.4 m. B. Large specimen (30.0 cm total diameter) of Pythonaster atlantidis, NW Florida Escarpment, 1970 m. C and D. Pythonaster atlantidis sponge predation. DeSoto Canyon, 2604 m, showing dorsal and oral views (C&D respectively). E. Feeding on hexactinellid sponge. Jaguey Spur, off Puerto Rico, 2668 m. Feeding.
FIGURE 16. Sibogaster bathyheuretor n in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 16. Sibogaster bathyheuretor n. sp. In situ. A. Holotype. USNM 1507293 West Florida Escarpment, Gulf of Mexico, 2597 m. B. Entrenched in sediment, Perdido Canyon, Gulf of Mexico, 26.1466, 94.86662, 2777 m, C. Feeding on antipatharian. West Florida Escarpment, Gulf of Mexico, 2192.9m. D. Feeding on sponges/sargassum West Florida Escarpment, Gulf of Mexico, 2138 m.
FIGURE 6. Unidentified species and Ceramaster grenadensis. A. Unidentified genus and species 1 in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 6. Unidentified species and Ceramaster grenadensis. A. Unidentified genus and species 1, NW Florida Escarpment, Gulf of Mexico, 2178 m. B. C. grenadensis in situ feeding. Unidentified stalks emerging from below (indicated with arrows). Richardson Scarp, North Atlantic. 897 m C. C. grenadensis feeding on coral rubble. Richardson Scarp, North Atlantic. 954 m D. C. grenadensis with yellow scale worm associate (indicated by arrow). Okeanos Ridge, 734 m.
FIG. 2. Shallow-water ophiuroids from Peru. A in Revisiting the diversity and distribution of the ophiuroids (Echinodermata Ophiuroidea) from Peru
FIG. 2. Shallow-water ophiuroids from Peru. A, Ophioderma panamense, Isla Foca; B, Ophiocoma aethiops, El Ñuro; C, Ophiolepis crassa, Isla Foca; D, Ophiactis kroeyeri, Melchorita; E, Ophioderma peruanum, El Ñuro; F, Ophionereis annulata, Cancas (field photographs; sizes not recorded; specimens not collected)
FIG. 1 in Revisiting the diversity and distribution of the ophiuroids (Echinodermata Ophiuroidea) from Peru
FIG. 1. Sample-based rarefaction curve of the Ophiuroidea from Peru according to the number of localities. Solid line: observed richness, Dashed line: expected average richness, Dotted lines: confidence interval (±95%)
FIGURE 2 in Holothuria (Lessonothuria) insignis Ludwig, 1875 (formally resurrected from synonymy of H. pardalis Selenka, 1867) and Holothuria (Lessonothuria) lineata Ludwig, 1875-new additions to the sea cucumber fauna of Pakistan, with a key to the subgenus Lessonothuria Deichmann (Echinodermata: Holothuroidea)
FIGURE 2. Holothuria (Lessonothuria) insignis Ludwig, 1875. Holo. 19. A. Dorsal view; B. Ventral view; C. Anterior end with extended tentacles; D. Tables of dorsal integument E. Regular and irregular pseudo-buttons of integument; F. Plate from ventral tube foot; G. Rod of tentacle; H. Tube feet rod; I. Papillae rods; J. Part of calcareous ring (single dorsal radial and adjoining interradial plates)
FIGURE 4 in Holothuria (Lessonothuria) insignis Ludwig, 1875 (formally resurrected from synonymy of H. pardalis Selenka, 1867) and Holothuria (Lessonothuria) lineata Ludwig, 1875-new additions to the sea cucumber fauna of Pakistan, with a key to the subgenus Lessonothuria Deichmann (Echinodermata: Holothuroidea)
FIGURE 4. Holothuria (Lessonothuria) lineata Ludwig, 1875. Holo. 23. A. Ventral view; B. Dorsal view; C. Calcareous ring with tentacles; D. Tables of dorsal body wall; E. Buttons from body wall; F. End-plate from anal papillae; G. Plate from podium; H. Tentacle rods; I. Perforated rods from podia; J. Part of calcareous ring (single dorsal radial and adjoining interradial plates).
FIGURE 8 in Two new species of holothurians of the genus Echinopsolus Gutt, 1990 (Echinodermata: Dendrochirotida: Cucumariidae) from the North-Western Pacific
FIGURE 8. Echinopsolus onekotanensis. Scanning electron microscope images of a globule of the dorsal body wall.
FIGURE 9 in Two new species of holothurians of the genus Echinopsolus Gutt, 1990 (Echinodermata: Dendrochirotida: Cucumariidae) from the North-Western Pacific
FIGURE 9. Echinopsolus onekotanensis. Scanning electron microscope images of a three-dimensional cross of the dorsal body wall.
FIGURE 2 in Two new species of holothurians of the genus Echinopsolus Gutt, 1990 (Echinodermata: Dendrochirotida: Cucumariidae) from the North-Western Pacific
FIGURE 2. Echinopsolus sanamyanorum: A—Polian vesicle, B—segments of the calcareous ring (R—radial segment, IRinterradial segment).
Paleobiogeography, paleoecology, diversity, and speciation patterns in the Eublastoidea (Blastozoa: Echinodermata)
<p>Understanding the distribution of taxa in space and time is key to understanding diversity dynamics. The fossil record provides an avenue to assess these patterns on vast timescales and through major global changes. The Eublastoidea were a conservatively plated Paleozoic echinoderm clade that range from the middle Silurian to the end Permian. The geographic distribution of the eublastoids, as a whole, has been qualitatively assessed but has historically lacked a quantitative analysis. This is the first examination of the Eublastoidea using probabilistic methods within the R package BioGeoBEARS to assess macroevolutionary trends. Results provide an updated understanding of eublastoid diversity with new peaks and troughs in diversity through their evolutionary history. Lithology is examined in an evolutionary framework and does not have clear evolutionary trends and there is much work to be done regarding environmental preferences. Biogeographic patterns do not recover precise group origins but do support the previous work that outlines Eublastoidea as a Laurentian clade. Sympatric speciation events dominant the clade's history but are likely exaggerated due to the highly combined areas. Vicariance events are rare and restricted to the Silurian and Devonian and dispersal events are more common throughout the evolutionary history. Pathways allowing for lineage migrations are noted between Southern Laurussia and China in the Devonian and Carboniferous, and Southern Laurussia and Eastern Gondwana in the Carboniferous. Future work will include the addition of more non-Laurentian species into the estimated phylogeny to better estimate these global patterns.</p>
FIGURE 15 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 15. Distribution of Ophiothrix species in Brazilian coast. Symbols: white triangle, Ophiothrix rahtbuni; black triangle, Ophiothrix suensoni; black square, Ophiothrix trindadensis; black circle, Ophiothrix brasiliensis n. sp.; white star, Ophiothrix spiniformis n. sp.; white circle, Ophiothrix tommasii n. sp.; black star, Ophiothrix troscheli n. sp.
FIGURE 13 in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 13. SEM photographs of vertebrae and arm spines of Ophiothrix troscheli n. sp.: A, proximal surface; B, distal surface; C, dorsal surface; D, ventral surface; E, lateral arm plate; f, arm spine (ZUEC 00857, holotype, São Paulo, Brazil). Scale bars: A–F = 200 μm.
FIGURE 10. Ophiothrix tommasii n in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 10. Ophiothrix tommasii n. sp.: A, Dorsal view of the disc; B–C, SEM detail of spines on the disc; D, detail of radial shields coverage; E, oral frame; F, dorsal arm plates; G, detail of spines on the first dorsal arm plate; H, ventral arm plates; I, SEM image of dorsal; J, SEM image of ventral arm plate (UFSITAB 00741, holotype, Maranhão, Brazil). Scale bars: A, D–H = 1 mm; B–C = 500 μm; I–J = 100 μm.
FIGURE 6. Ophiothrix brasiliensis n in Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species
FIGURE 6. Ophiothrix brasiliensis n. sp.: A, Dorsal view of the disc; B–D, SEM detail of spines on the disc; E, detail of radial shields coverage; F, oral frame; G, dorsal arm plates; H, ventral arm plates; I, SEM image of dorsal arm plate; J, SEM image of ventral arm plate (UFBA 01731, holotype, Bahia, Brazil). Scale bars: A, E–H = 1 mm; B–C = 50 μm; D = 20 μm; I–J = 100 μm.
FIGURE 3. Ophiocoma cynthiae, a-d in New records of brittle stars (Echinodermata: Ophiuroidea) from the Lakshadweep atolls, northern Indian Ocean, with notes on Indophioderma ganapatii Sastry Marimuthu & Rajan, 2019
FIGURE 3. Ophiocoma cynthiae, a-d: IO/SS/ECD/00229, e-f: IO/SS/ECD/00230. (a) live specimen, ex situ, (b) disc, dorsal view, (c) proximal arm, dorsal view, (d) disc and proximal arm, ventral view, (e, f) dental plate, external and internal view, respectively. Scale bar: 2mm.
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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.