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71 results for “Cyclostomata”
Figure 3 in Taxonomy of the bryozoan genera Oncousoecia, Microeciella and Eurystrotos (Cyclostomata: Oncousoeciidae)
Figure 3. Oncousoecia dilatans (Johnston, 1847), lectotype (NHM 47.9.18.59). (A) Oligoserial branches close to colony origin; (B) slightly oblique view of branches showing growing tips; (C) autozooids; (D) incompletely-formed gonozooid represented by a depression (left of centre) and opening into the fertile zooid. Scale bars: 1 mm (A); 500 mm (B); 200 mm (C, D).
Figure 1 in Taxonomy of the bryozoan genera Oncousoecia, Microeciella and Eurystrotos (Cyclostomata: Oncousoeciidae)
Figure 1. Photographs of type specimens of some Recent oncousoeciid cyclostome species. (A) Lectotype of Oncousoecia dilatans (Johnston, 1847) showing colony ramifying across the interior of a small bivalve shell (NHM 47.9.18.59). (B) Lectotype of Alecto compacta Norman, 1867, a subjective junior synonym of O. dilatans (NHM 11.10.1.63). (C) Lectotype of Oncousoecia lobulata Canu, 1918, the colony figured by Hincks (1880, Plate 50, Figure 5, 5a) as Tubulipora lobulata Hassall, 1841 which apparently formed the basis for Canu's type species of Oncousoecia (NHM 1911.10.1.86). (D) Lectotype of Microeciella suborbicularis (Hincks, 1880), a subcircular colony with associated spirorbids (NHM 99.5.1.1427a). Scale bars: 5 mm (A, D); 1 mm (B, C).
FIG. 8. — Hornera mediterranea n in The Mediterranean species of Hornera Lamouroux, 1821 (Bryozoa, Cyclostomata): reassessment of H. frondiculata (Lamarck, 1816) and description of H. mediterranea n. sp.
FIG. 8. — Hornera mediterranea n. sp., vestiges of brood chambers: A, two floors covered by secondary calcification; B, basal tube of a gonozooid. Origin: A-B, Riou Is., 74 m, 5/VII/1971. Scale bars: A, 400 µm; B, 200 µm. Photos: Jean-Georges Harmelin.
FIG. 7. — Hornera mediterranea n in The Mediterranean species of Hornera Lamouroux, 1821 (Bryozoa, Cyclostomata): reassessment of H. frondiculata (Lamarck, 1816) and description of H. mediterranea n. sp.
FIG. 7. — Hornera mediterranea n. sp., dorsal side: A-C, secondary calcification of dorsal side with ridges bearing transversally aligned pustules and pores in narrow spindle-shaped areas; D, branch tip; E, gonozooid in frontal view; F, gonozooid in lateral view, basal tube and ooeciostome; G, network of secondary calcification covering the gonozooid wall; H, gonozooid wall with 3 mural pores closed by radial spines. Origin: A-C, Riou Is, 85 m, 12.VII.1973; D-F, Riou Is., 74 m, 5.VII.1971; G, Riou Is., 70 m, 3.VII.1971. Scale bars: A, 200 µm; B-C, 50 µm; D, F-G, 100 µm; E, 400 µm; H, 10 µm. Photos: Jean-Georges Harmelin.
FIG. 6. — Hornera mediterranea n in The Mediterranean species of Hornera Lamouroux, 1821 (Bryozoa, Cyclostomata): reassessment of H. frondiculata (Lamarck, 1816) and description of H. mediterranea n. sp.
FIG. 6. — Hornera mediterranea n. sp., frontal side: A, bifurcated distal part of branch; B, edge of branch, note the shape of peristomes; C, branch tip without secondary calcification; D-E, two stages of secondary calcification; F, part of branch with heavy secondary calcification. Origin: A, C-E, Marseille, Riou Is., 85 m, 2/VII/1973; B, F, Riou Is., 74 m, 5/VII/1971. Scale bars: A, 400 µm; B, 100 µm; C-F, 200 µm. Photos: Jean-Georges Harmelin.
FIG. 1 in The Mediterranean species of Hornera Lamouroux, 1821 (Bryozoa, Cyclostomata): reassessment of H. frondiculata (Lamarck, 1816) and description of H. mediterranea n. sp.
FIG. 1. — Hornera frondiculata (Lamarck, 1816), historical depictions of large colonies: A, by Marsilli (1725: pl. 33, fig. 63); B, by Ellis (in Ellis & Solander 1786: pl. 26, fig. 1).
FIG. 5. — Hornera mediterranea n in The Mediterranean species of Hornera Lamouroux, 1821 (Bryozoa, Cyclostomata): reassessment of H. frondiculata (Lamarck, 1816) and description of H. mediterranea n. sp.
FIG. 5. — Hornera mediterranea n. sp., branching features of colonies: A, holotype, MNHN-IB-2017-225. B1, large colony sparsely branched, B2, smaller colony densely ramified; C, large bushy colony; D, base of a colony encrusting a biogenic fragment; E, part of colony with lateral branches. Origin: A, C, same as holotype, Marseille, Riou Is., 60-65 m. B1, La Ciotat, 60 m, 27.VII.1992; B2, Marseille, Riou Is., 70 m, 8.XII.1971; D, Marseille, Grand-Conglue Is., 90 m, 2.III.1972; E, Marseille, Impérial du large, 2.II.1976. Scale bars: A-B, 1 cm; C, 2 cm; D-E, 2 mm. Photos: Jean-Georges Harmelin.
FIG. 3 in The Mediterranean species of Hornera Lamouroux, 1821 (Bryozoa, Cyclostomata): reassessment of H. frondiculata (Lamarck, 1816) and description of H. mediterranea n. sp.
FIG. 3. — Hornera frondiculata (Lamarck, 1816), frontal side: A, part of colony with five bifurcations; B, growing tip of a branch; C, initial stage of secondary calcification with ridges encircling autozooids with typically notched peristomes and frontal wall pierced with large mural pores; D, intermediate stage of secondary calcification; E, older stage of secondary calcification; F, part of colony with several lateral branches. Origin: A-D, Greece, Scarpanto Strait, 29-33 m, 29.VIII.1967; E, Marseille, Riou Is., 70 m, 3.VII.1971; F, Riou Is., 90 m, 2.III.1972. Scale bars: A, F, 500 µm; B, 200 µm; C-D, 100 m; E, 150 µm. Photos: Jean-Georges Harmelin.
Fig. 1. A in New species of Hornera (Bryozoa, Cyclostomata) from Jeju Island (Korea)
Fig. 1. A map of Jeju-do (Jeju Island) with detailed position of collection sites of samples studied samples. 1. Udo Island. 2. Munseom Island. 3. Marado Island. 4. Biyangdo Island.
Fig. 2. Hornear jeongsangi n in New species of Hornera (Bryozoa, Cyclostomata) from Jeju Island (Korea)
Fig. 2. Hornear jeongsangi n. sp. A. general view of frontal side of the colony showing the arrangement of the autozooidal tubes and position of the gonozooid. B. general view of dorsal side of the colony showing the arrangement of gonozooids and the frontal walls of gonozooids. C. detail of the gonozooid from frontal view showing the position of ooeciopore. D. detail of ooeciopore, showing the nonporous part around the opening. E. detail of ooeciopore, showing the sizes of the pores around the ooeciopore and on gonozooid frontal wall. F. lateral view showing the size of the gonozooid and position of ooeciopore. Scale bars: A, B = 1 mm. C-F = 100 μm.
Figure 6 in Taxonomy of the bryozoan genera Oncousoecia, Microeciella and Eurystrotos (Cyclostomata: Oncousoeciidae)
Figure 6. Microeciella beliensis Taylor and Sequeiros, 1982, holotype from the Lower Jurassic of Spain (NHM D53321a). (A) Subcircular colony; (B) gonozooid; (C) another gonozooid; (D) early astogeny with partly overgrown ancestrula at centre; (E) autozooidal frontal wall showing pseudopores. Scale bars: 1 mm (A); 200 mm (B, C, D); 50 mm (E).
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