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374 results for “East Pacific”
FIGURE 4. Paratimea globastrella n in Sponges from Clipperton Island, East Pacific
FIGURE 4. Paratimea globastrella n. sp., A. habit of holotype ZMA Por. 21202, B. thick section of skeleton showing dominance of globular silica bodies interpreted as modified asters, C. tylostyles, D. centrotylote oxeas, E. large globular aster, F. smaller globular asters showing various stages of aster-derived lobes and spines.
FIGURE 1 in Sponges from Clipperton Island, East Pacific
FIGURE 1. Map of Clipperton Island (10 ° 17 – 18 ' N 109 ° 11 – 13 ' W), indicating approximate positions of diving stations where collections of sponges were made. Asterisks indicate positions of the Clipperton 1994 Expedition localities (material shared between CASIZ and ZMA), dots indicate positions of the Jean-Louis Etienne Clipperton Expédition 2004 / 5 (material kept in MNHN). For details of the collecting positions of individual samples of the various sponges cf. the descriptions under each species heading. Positions of the two samples obtained by the 1939 the motor cruiser Velero III visit to Clipperton are not indicated as they are unclear (' rocks to south of landing place'). Inset showing position (arrow) of Clipperton Island in the East Pacific.
FIGURE 3. Plakinastrella clippertonensis n in Sponges from Clipperton Island, East Pacific
FIGURE 3. Plakinastrella clippertonensis n. sp., spicules of holotype MNHN DCL 4042 – A. A. diods, B. microdiods, C. calthrops, D. triods, including ' microtriod' (at right).
FIGURE 4. Paratimea globastrella n in Sponges from Clipperton Island, East Pacific
FIGURE 4. Paratimea globastrella n. sp., A. habit of holotype ZMA Por. 21202, B. thick section of skeleton showing dominance of globular silica bodies interpreted as modified asters, C. tylostyles, D. centrotylote oxeas, E. large globular aster, F. smaller globular asters showing various stages of aster-derived lobes and spines.
FIGURE 2. A. Plakinastrella clippertonensis n in Sponges from Clipperton Island, East Pacific
FIGURE 2. A. Plakinastrella clippertonensis n. sp. habit of holotype, MNHN DCL 4042 – A. B – D. Oscarella carmela Muricy & Pearse, 2004, B. habit of specimen MNHN DCL 4050 – A, C – D. Oscarella carmela Muricy & Pearse, 2004, C. histological cross section showing basal lacunae and embryos, D. detail of the same showing choanocyte chambers separated by peripheral grooves.
FIGURE 7 in Sponges from Clipperton Island, East Pacific
FIGURE 7. Clathria (Thalysias) hermicola n. sp., holotype MNHN DCL 4043–A. A. habit, thinly encrusting on dead corals, B. choanosomal styles with smooth and microspined heads, C. subectosomal subtylostyle with microspined head, D. ectosomal subtylostyle with microspined head, E. echinating acanthostyle with relatively lightly spined upper half, F. oxhorn-like tox, G. palmate isochela.
FIGURE 19 in Sponges from Clipperton Island, East Pacific
FIGURE 19. Sycettusa aff. sibogae (Burton, 1930), A. habit of specimen MNHN DCL 4057, B. light microscopic view of peripheral skeleton, scale bar = 100 µm, C. overview of spicule complement, D. large equiangular triactine, E. small equiangular triactine, F. large unequiangular triactine, G. various sizes of unequiangular triactine, H. fragment of trichoxea.
FIGURE 10 in Sponges from Clipperton Island, East Pacific
FIGURE 10. Tedania (Tedania) strongylostylota Kennedy & Hooper, 2000, sample 4056–B, A. habit of specimen growing on antipatharian stalks, B. choanosomal strongylotylote with details of apices, C. ectosomal tylote and details of microspined apices, D. large onychaete and details of apices, E. small onychaete and detail of anterior apex.
FIGURE 3. Plakinastrella clippertonensis n in Sponges from Clipperton Island, East Pacific
FIGURE 3. Plakinastrella clippertonensis n. sp., spicules of holotype MNHN DCL 4042–A. A. diods, B. microdiods, C. calthrops, D. triods, including 'microtriod' (at right).
FIGURE 16. Aplysinopsis bergquistae n in Sponges from Clipperton Island, East Pacific
FIGURE 16. Aplysinopsis bergquistae n. sp., holotype CASIZ 103429, A. habit, B. detail of surface showing a surface with 'goose flesh' (low conules), scale bar = 1 cm, C. light microscopic view of surface armour of sand grains, scale bar = 100 µm, D. histological section of choanosome showing cored primary fiber, uncored (fragments of) secondary fibers and sperm cysts, ChCh = choanocyte chambers, scale bar = 100 µm, E. light microscopic view of primary fiber and irregularly anastomosed secondary fibers, scale bar = 100 µm, F. detail of fenestrated connection of primary and secondary fiber, scale bar = 50 µm.
FIGURE 11. Ulosa pacifica n in Sponges from Clipperton Island, East Pacific
FIGURE 11. Ulosa pacifica n. sp., holotype ZMA Por. 13998, A. habit encrusting a piece of dead coral, scale bar = 1 cm, B. light microscopical view of the skeleton, scale bar = 200 µm, C. stylote megasclere with details of various posterior apices.
FIGURE 6 in Sponges from Clipperton Island, East Pacific
FIGURE 6. Tethya sarai Desqueyroux-Faúndez & Van Soest, 1997. A. habit of specimens from sample ZMA Por. 13992, B. cross section of peripheral region showing the cortex and arrangement of megascleres and megasters, C. two sizes of strongyloxeas, D. two sizes of megasters, E. micraster of the ectosome, F. small oxyaster of the choanosome.
FIGURE 2. A. Plakinastrella clippertonensis n in Sponges from Clipperton Island, East Pacific
FIGURE 2. A. Plakinastrella clippertonensis n. sp. habit of holotype, MNHN DCL 4042–A. B–D. Oscarella carmela Muricy & Pearse, 2004, B. habit of specimen MNHN DCL 4050–A, C–D. Oscarella carmela Muricy & Pearse, 2004, C. histological cross section showing basal lacunae and embryos, D. detail of the same showing choanocyte chambers separated by peripheral grooves.
FIGURE 1 in Sponges from Clipperton Island, East Pacific
FIGURE 1. Map of Clipperton Island (10°17–18'N 109°11–13'W), indicating approximate positions of diving stations where collections of sponges were made. Asterisks indicate positions of the Clipperton 1994 Expedition localities (material shared between CASIZ and ZMA), dots indicate positions of the Jean-Louis Etienne Clipperton Expédition 2004/5 (material kept in MNHN). For details of the collecting positions of individual samples of the various sponges cf. the descriptions under each species heading. Positions of the two samples obtained by the 1939 the motor cruiser Velero III visit to Clipperton are not indicated as they are unclear ('rocks to south of landing place'). Inset showing position (arrow) of Clipperton Island in the East Pacific.
FIGURE 4. Paratimea globastrella n in Sponges from Clipperton Island, East Pacific
FIGURE 4. Paratimea globastrella n. sp., A. habit of holotype ZMA Por. 21202, B. thick section of skeleton showing dominance of globular silica bodies interpreted as modified asters, C. tylostyles, D. centrotylote oxeas, E. large globular aster, F. smaller globular asters showing various stages of aster-derived lobes and spines.
FIGURE 15 in Sponges from Clipperton Island, East Pacific
FIGURE 15. Spongia (Spongia) sweeti (Kirkpatrick, 1900), A. specimen ZMA Por. 13987, scale bar = 1 cm, B. sample MNHN DCL 4048–D with diversity of forms, C. light microscopic view of cross section showing light incomplete surface armour of sand grains, scale bar = 1 cm, D. light microscopic view of peripheral choanosomal skeleton with cored primary fibers and dense mass of secondary fibers, scale bar = 100 µm, E. light microscopic view of a longitudinal section through a fistule to show characteristic parallel primary fiber system, scale bar = 100 µm.
FIGURE 9 in Sponges from Clipperton Island, East Pacific
FIGURE 9. Hymedesmia (Hymedesmia) prostrata (Thiele, 1903), specimen MNHN DCL 4042–B, A. habit encrusting a piece of dead coral, B. tornote and detail of apices showing anisotornote condition, C. large acanthostyle, D. small acanthostyle, E. arcuate isochela.
FIGURE 8 in Sponges from Clipperton Island, East Pacific
FIGURE 8.?Coelosphaera (Coelosphaera) sp., undetermined specimen MNHN DCL 4056–A. A. habit encrusting black corals, B. light microscopy view to show skeleton, sigmas and numerous wedge-shaped presumed trichodragmas (arrows), scalebar = 50 µm, C. tylote and details of heads, D. sigma.
FIGURE 18. Clathrina passionensis n in Sponges from Clipperton Island, East Pacific
FIGURE 18. Clathrina passionensis n. sp., holotype CASIZ 180256, A. habit encrusting a specimen of Spongia (Spongia) sweeti, scale bar = 1 cm, B and C. details of surface, scale bar = 100 µm, D. triactine, E. tetractine.
FIGURE 13 in Sponges from Clipperton Island, East Pacific
FIGURE 13. Callyspongia (Callyspongia) roosevelti n. sp., A. holotype ZMA Por. 13984, scale bar = 1 cm, B. paratype USNM 22659 originally reported as Callyspongia vaginalis by De Laubenfels (1939), C. paratypes MNHN DCL 4049–B, D. light microscopic view of the ectosomal skeleton showing the characteristic double-meshed Callyspongia skeleton, scale bar = 100 µm, E. detail of the same, showing single thin spicules coring the fibers, scale bar = 50 µm, F. choanosomal skeleton showing knotted fibers with a light core of spicules, scale bar = 100 µm.
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