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342 results for “Electron Microscopy”
FIGURE 32 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 32. Pseudolepralia ellisinae Silén, 1941. Holotype UPSZTY 2469, Bonin Islands, Japan. A. General view of the colony. B. Two autozooids with complete lamina and associated avicularia. C, D. Autozooids with incomplete frontal shield at different stage. E. Close-up of avicularia with open mandibles. F. Ovicellate zooids, some with broken ooecium. Scale bars: A, F = 200 µm; B–D = 100 µm; E = 50 µm.
FIGURE 36 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 36. Triphyllozoon cornutum Silén, 1954. Holotype LUZM 54, Western Australia. A. General view of the colony; scale bar 1 cm. B. Labels accompanying the specimen.
FIGURE 24 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 24. Semikinetoskias dubia Silén, 1941. Lectotype (designated here) UPSZTY 191153D, Japan. A. General view of the specimen. B. Close-up of two autozooids lacking pedunculate avicularia because detached. C. Close-up of an autozooid with pedunculate avicularium. D. Close-up of avicularium. E. Dorsal side. Scale bars: A = 1 mm; B = 200 µm; C = 120 µm; D = 100 µm; E = 500 µm.
FIGURE 18 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 18. Gregarinidra incrustans (Silén, 1941). Holotype UPSZTY 2473, Japan. A. Group of zooids and interzooidal avicularia. B. Close-up of an autozooid showing the bifurcating spines and an avicularium with pointed rostrum. C. Close-up of an ovicell subimmersed in the distal avicularium. Scale bars: A = 200 µm; B = 120 µm; C = 100 µm.
FIGURE 17 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 17. Cribralaria curvirostris Silén, 1941. Holotype UPSZTY 2484, Bonin Islands, Japan. A. Group of zooids, one ovicellate, interzooidal avicularia and a kenozooid. B. Close-up of the ooecium immersed in the distal avicularium. C. Tilted view of two autozooids showing the latero-oral, prominent spines. D. Close-up of interzooidal avicularia with curved, serrated rostrum. E. Close-up of the orifice. Scale bars: A = 200 µm; B, C = 120 µm; D = 100 µm; E = 40 µm.
FIGURE 14 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 14. Mangana incrustata (Silén, 1941) n. comb. A, B. Holotype UPSZTY 2474, Goto Islands, Japan. A. Group of zooids, two ovicellate. Arrows indicate distolateral opesial spine bases. B. Close-up of two autozooids and an avicularium. C, D. Paratype UPSZTY 191149, Bonin Islands, Japan. C. Group of zooids showing the variable appearance owing to the development or not of the calcified 'lamina'. Arrows indicate distolateral opesial spine bases. D. Ancestrula (see dashed ellipse) and first budded autozooids lacking the calcareous lamina. All scale bars are 200 µm.
FIGURE 13 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 13. Mangana canui (Silén, 1941) n. comb. A. Paratype UPSZTY 191147, Japan. Close-up of ovicellate zooids and avicularia of different sizes. B. Paratype UPSZTY 191146, Japan. Close-up of an autozooid showing multiporous septula distally and distolaterally. Scale bars are 200 µm.
FIGURE 28 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 28. Cellaria boninenis Silén, 1938. Lectotype (designated here) UPSZTY 2477A, Bonin Islands, Japan. A. View of internodes at branch bifurcation. B, C. Close-up of each internode in (A). D. Close-up of autozooids, the one at the bottom showing zooid reparation by intramural budding. E. Close-up of the avicularium. F. Close-up of the orifice. Scale bars: A–C = 500 µm; D = 200 µm; E = 100 µm; F = 20 µm.
FIGURE 39 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 39. Triphyllozoon mauritzoni Silén, 1943. Paralectotype LUZM 57b (bleached), Australia. A. General view of the frontal surface. B. Close-up of autozooids. C. Group of zooids, one ovicellate. D. Autozooids at the growing edge showing a denticulate anter and up to five spine bases. E. General view of basal kenozooids. F. General view of the dorsal side. Scale bars: A = 1 mm; B, D = 150 µm; C = 250 µm; E, F = 500 µm.
FIGURE 10 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 10. Antropora erecta Silén, 1941. Holotype UPSZTY 2455, Bonin Islands, Japan. A. Group of zooids, some ovicellate (arrowed), and interzooidal avicularia. B. Close-up of two zooids, one ovicellate, and interzooidal avicularia. C. Close-up of an ovicell and two interzooidal avicularia. D. Irregularly shaped zooids at colony bifurcation. Scale bars: A, D = 200 µm; B = 120 µm; C = 50 µm.
FIGURE 8. Parellisina sileni Osburn, 1949 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 8. Parellisina sileni Osburn, 1949. Holotype SMNH-Type-3081, Japan. A. General view of the colony encrusting a rock. B. Ancestrula, seemingly tatiform with at least seven countable spine bases (see white arrows) and early astogeny. Two distolateral spine bases usually visible on periancestrular autozooids (see black arrows). C. Group of ovicellate zooids with complete or incomplete ooecia and an avicularium. Arrows point to preserved circumopesial spine bases. D. Close-up of an ooecium and an autozooid without the frontal membrane showing the beaded cryptocyst, the opesia and spine bases, one placed proximolaterally and the other distolaterally (see arrows). E. Close-up of an ovicellate zooid with frontal membrane and distolateral spine bases flanking the ooecium. F. Close-up of an autozooid with the frontal membrane and open operculum showing the outline of the orifice, and two avicularia with the falciform mandibles mirroring the shape of the rostrum. G. Closeup of an avicularium with the associated kenozooid. H. Avicularia with open mandibles showing the elliptical opesia and robust, triangular condyles almost touching, and the autozooids at colony edge showing the distal pore-chamber window and a broken ooecium. I. Broken autozooids showing the lateral uniporous septula (see arrows) for autozooidal communication. Scale bars: A = 1 mm; B, C, D = 200 µm; E, F, G = 150 µm; H, I = 250 µm.
FIGURE 16. Heliodoma implicata Calvet, 1907. North Atlantic Ocean, Azores. A–D. SMNH-127828. A in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 16. Heliodoma implicata Calvet, 1907. North Atlantic Ocean, Azores. A–D. SMNH-127828. A. General view of a colony with frontal membranes, opercula and setae. B. Close-up of the ancestrula and first generation of autozooids, with closure plates, and vibracula budded in a spiral pattern. C. Close-up of autozooids and vibracula at the colony edge. D. Part of a colony showing autozooids with several intramural buds and others with closure plates. E–G. SMNH-128027. E. General view of the colony without membranes. F. Group of zooids, showing the granular cryptocyst with several concentric rims due to interzooidal budding and the pear-shaped opesiae, and vibracula. Autozooids in the inner ring with closure plates. G. Close-up of an autozooid, showing the semicircular operculum, and associate vibraculum at colony edge. Scale bars: A, D, E = 500 µm; B, C, F, G = 300 µm.
FIGURE 6 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 6. Cranosina transversa (Silén, 1941). Holotype UPSZTY 2465, Japan. A. Close-up of two autozooids and associated interzooidal avicularia distally placed. B. Close-up of an interzooidal avicularium showing the two robust condyles. Scale bars: A = 200 µm; B = 60 µm.
FIGURE 31 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 31. Costaticella gisleni Silén, 1954. Syntype LUZM 51, Western Australia. A. General view of a branch comprising unizooidal and bizooidal segments. B, C. Close-ups of unizooidal segments. D. Close-up of the orifice. E. Close-up of an avicularium. F. Close-up of a bizooidal segment. G. Close-up of an autozooid showing the distolateral avicularium. Scale bars: A = 1 mm; B, C, G = 200 µm; D = 50 µm; E = 25 µm; F = 300 µm.
FIGURE 5 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 5. Corbulella boninensis (Silén, 1941). Lectotype (designated here) UPSZTY 2470D, Bonin Islands, Japan. A. General view of the colony. B–D. Close-up of autozooids with or without the frontal membrane and with and without preserved circumopesial spines. E. Details of the beaded cryptocyst and smooth gymnocyst. F. Ovicellate zooids. G. Vicarious avicularium and ovicellate zooids. H. Kenozooid. Scale bars: A = 500 µm; B, F, H = 150 µm; C, D, G = 200 µm; E = 60 µm.
FIGURE 4 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 4. Cauloramphus japonicus Silén, 1941. Holotype UPSZTY 2463, Japan. A. Group of zooids. B. Close-up of two autozooids lacking stalked avicularia. The arrow indicates the only proximolateral avicularium observed in the specimen. C. Close-up of two autozooids with a single stalked avicularium. D. Intramural budding in autozooids. E. Ovicellate zooids with paired stalked avicularia. F. Close-up of an ovicell flanked by two stalked avicularia. Scale bars: A–E = 200 µm; F = 100 µm.
FIGURE 3 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 3. Cauloramphus costatus Silén, 1941. Holotype UPSZTY 2462, Japan. A. Group of zooids. B. Close-up of an autozooid. C. Close-up of an ovicellate zooid. D. Close-up of ovicells and avicularia. E. Close-up of an autozooid deprived of spines, showing the granular cryptocyst and the budding sites of avicularia. F. Intramurally budded kenozooids. Scale bars: A = 400 µm; B, C, E, F = 200 µm; D = 100 µm.
FIGURE 15 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 15. Heliodoma goesi Silén, 1942a. Caribbean Sea, Virgin Islands. A, B. Lectotype (designated here) SMNH-Type- 1892a. C, D. Paralectotype SMNH-Type-1892b. E–I. Paralectotype SMNH-Type-1892c. J. Paralectotype SMNH-Type-1892d. A, C, E. General view of three colonies, on tests of benthic foraminifera, showing spiral-like budding pattern. The arrows in E point to septulum. B. Close-up of zooids, some with closure plates, some others with membranes and semicircular opercula, and vibracula, one with a seta. D. Close-up of an ovicellate zooid and associate vibraculum at colony edge (arrow pointing to septulum). F. Close-up of two autozooids and associated vibracula. G. Close-up of two autozooids, one ovicellate. H. Close-up of an ovicellate zooid (arrow pointing to the pore of the ooecium) showing the granular cryptocyst. I. Close-up of two autozooids, one ovicellate (arrow pointing to the pore of the ooecium), the other with opesia double rim due to intramural budding. J. View of the dorsal side of the colony that grows over the substrate but does not enwrap it. Scale bars: A, C, E = 500 µm; B, J = 300 µm; D, F, G, I = 200 µm; H = 150 µm.
FIGURE 2 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 2. Amphiblestrum crassispinosum (Silén, 1954). Lectotype (designated here) LUZM 50a, Western Australia. A. General view of the colony encrusting an alga. B. Close-up of the opesia, with the two robust distolateral spines, and the ooecium. C. Tilted view of ovicellate zooids showing the length of the spines and the aviculiferous suboral mucro, broken in some zooids. D. Frontal view of ovicellate zooids showing the suboral aviculiferous mucro of the distal zooid resting on the ooecium. Scale bars: A = 500 µm; B = 150 µm; C, D = 250 µm.
FIGURE 30 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 30. Jullienula ortmanni (Silén, 1941). A–C. Holotype UPSZTY 191144A, Japan. A. Group of autozooids. B. Close-up of two ovicellate zooids. Arrows indicate costal pseudopores. C. Close-up of the orifice. D. Paratype UPSZTY 191144B, Japan. Portion of a young colony showing the ancestrula with the first budded zooids and a kenozooid (see asterisk). Scale bars: A, D = 200 µm; B = 100 µm; C = 40 µm.
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