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239 results for “cheilostomes”
FIGURE 46 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 46. Crucescharellina japonica Silén, 1947a. Holotype UPSZTY 2483, Japan. A, B. General frontal view of three fragments. C. Group of autozooids. D, E. Close-up of avicularia. F. General dorsal view of two additional fragments. G. Closeup of dorsal avicularia. Scale bars: A, B, F = 500 µm; C = 200 µm; D, E = 50 µm; G = 60 µm.
FIGURE 45. A–E in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 45. A–E. Conescharellina sp. SMNH-220511, Java Sea, Malay Archipelago. A. Lateral view of the colony. B. Group autozooids and interzooidal avicularia. C. Close-up of an orifice. D. Close-up of avicularia. E. Close-up of the apical cone with kenozooids and avicularia. F–H. Conescharellina longirostris Silén, 1947a SMNH-Type-4605, Java Sea, Malay Archipelago. F. Apical view of a colony. G. Apical view of some zooids showing a well-developed proximolateral peristome. H. Antapical view of a colony. Scale bars: A, F, H = 500 µm; B, E, G = 200 µm; C, D = 100 µm.
FIGURE 44 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 44. Conescharellina laevis Silén, 1947a. Java Sea, Malay Archipelago. A–C. Lectotype (designated here) SMNH- Type-4606a. D, E. Paralectotype SMNH-Type-4606b. F. Paralectotype SMNH-Type-4606c. G. Paralectotype SMNH-Type- 4606d. A, D. Lateral views of two colonies. B. Group of zooids. C. Close-up of orifices and avicularia. E. Close-up of two rows of autozooids and avicularia. F. Apical view of a colony with the zone of kenozooids. G. Antapical view of a colony with radial rows of avicularia between autozooids. Scale bars: A, D, F, G = 500 µm; B, E = 300 µm; C = 100 µm.
FIGURE 43 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 43. Conescharellina brevirostris Silén, 1947. Daidokutsu submarine cave, Ie Island, Okinawa, Japan. A. Lateral view of the colony. Arrows indicate adventitious avicularia placed distolaterally to the orifice in some zooids. B. Close-up of a zooid with surrounding interzooidal avicularia. The arrow indicates the adventitious avicularium distolaterally to the orifice. C. Antapical view of a colony. D. Close-ups of the central antapical surface with avicularia. Scale bars: A, C = 200 µm; B = 100 µm; D = 100 µm.
FIGURE 42 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 42. Conescharellina brevirostris Silén, 1947a. SMNH-Type-4604, Java Sea, Malay Archipelago. A, E. Lateral views of two colonies. Arrows indicate adventitious avicularia placed distolaterally to the orifice in some zooids. B. Close-up of a zooid with surrounding interzooidal avicularia. C. Close-up of an orifice showing the proximolaterally developed peristome. D. Close-up of an avicularium. F. Apical view of a colony. G. Close-up of the apical kenozooids. H. Antapical view of a colony. I, J. Close-ups of the antapical surface and avicularia. Scale bars: A, E, F, H = 500 µm; B, C = 100 µm; D = 200 µm; G, I = 300 µm; J = 50 µm.
FIGURE 40 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 40. Triphyllozoon microstigmatum Silén, 1954. Holotype LUZM 53, Western Australia. A. View of the tubular colony. B. Labels accompanying the specimen. C. Group of autozooids. D, E. Close up of autozooids with frontal avicularia, some with open or closed mandibles. Arrows indicate the two varieties, round with raised, finely denticulate rostrum (white arrows), and elliptical flat (black arrows). F. Large avicularium with bicuspid rostrum located at the fenestra. G. Close-up of the avicularium in (F) showing the bicuspid rostrum and the triangular, hooked mandible. H. Group of zooids, two of which ovicellate. I. Close-up of an ooecium. J. General view of the dorsal side. Arrows point to circular avicularia protruding from the edge of some fenestrae. K. Close-up of circular avicularia protruding from the dorsal edge of the fenestrae. L, M. Close-ups of dorsal avicularia. Given the tubular shape of the colony exposing the dorsal side of the autozooids towards the exterior and the frontal side towards the interior, SEM micrographs were taken from two fragments subsampled from the tips of the holotype colony. Scale bars: A = 2 cm; C, F, H = 500 µm; D = 400 µm; E = 300 µm; G, I = 100 µm; J = 1 mm; K = 45 µm; L, M = 50 µm.
FIGURE 41 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden
FIGURE 41. Triphyllozoon regulare Silén, 1954. Holotype LUZM 55, Western Australia. A. General view of the colony fragment. Arrows indicate the large avicularia adjacent to the fenestrae. B. Group of autozooids, one with elliptical frontal avicularium. C. Close-up of a secondary orifice lacking the peristomial avicularium. D. Close-up of a secondary orifice showing the peristomial avicularium with denticulate rostrum and two 'telescopic' lateral spines. E. Autozooids with large frontal avicularia. F. Closeup of the frontal avicularium. G. Close-up of the large frontal avicularium usually located at the fenestra. H. General view of the dorsal side. I. Close-up of a dorsal avicularium and tuberculation. J, K. Close-ups of dorsal avicularia with closed and open mandibles. Scale bars: A = 1 mm; B, G = 200 µm; C, D, I, J, K = 50 µm; E = 250 µm; F = 100 µm; H = 500 µm.
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.
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