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datasets available to search
ShareScore release 0.9.0
Dataset results
8 results for “Orthoseirales”
FIGURES 1–14 in New species and a new genus of the Orthoseirales from Patagonia, Argentina, with comments on systematic affinities within the Order
FIGURES 1–14. "Cyclotella stipata Frenguelli". LM. Specimens from the type population. 1–9. Valve views showing population variability. 10. Detail of valve face, note the hyaline area at center with the ring of carinoportulae (arrowhead) alternating with rimoportulae (arrow). 11–12. Frustule in girdle view, showing the smooth collum and the internal thickening at the mantle margin. 13. Valve in girdle view, note the copulae ligulated with distinct poroids. 14. Frustules in girdle view showing linking spines. Scale bars: Figs 1–14 = 10 μm; bar length is the same in all figures except Fig. 10.
FIGURES 34–53 in New species and a new genus of the Orthoseirales from Patagonia, Argentina, with comments on systematic affinities within the Order
FIGURES 34–53. Orthoseira ferrarioana spec. nov. Specimens of type population. 34–46. LM. 47–53. SEM. 34–43. Valve views showing population variability. 40. Holotype. 44–46. Specimen in girdle view at different foci. 47–49. External valve views. 47. Whole valve. 48. Detail of valve center showing external openings of carinoportulae (arrow). 49. Detail of valve in oblique view, note the marginal spines. 50–53. Internal valve views. 50. Whole valve. 51. Detail of valve center showing the internal openings of carinoportulae (arrow) and the slits between them (arrowheads). 52. Detail of the striae arrangement. 53. Detail of a broken valve showing the thickened interstriae. Scale bars = 10 μm (Figs. 34–47, 50), 5 μm (Fig. 49), 2 μm (Figs 48, 52–53), 1 μm (Fig. 51). Bar length is the same in all LM figures.
FIGURES 25–33 in New species and a new genus of the Orthoseirales from Patagonia, Argentina, with comments on systematic affinities within the Order
FIGURES 25–33. "Cyclotella stipata Frenguelli" from Tierra del Fuego (Figs 25–26, 28–33) and Limay River basin (Fig. 27). 25–29, 31–33. SEM. 30. LM. 25–27. Mantle external views. 25. Whole valve, note parallel rows of areolae and the smooth collum. 26. Detail of the valve face/mantle junction with spines. 27. Detail of spines linking two neighbor valves. 28. Broken valve in internal view, note the internal thickening at the valve margin. 29–30. Whole frustules. 31. Valve with two copulae, note the conspicuous ligula. 32. Open valvocopula ornamented with rows of poroids. 33. Open copula showing ligula and antiligula. Scale bars = 10 μm (Figs 25, 29–33), 5 μm (Figs 26–27).
FIGURES 54–71 in New species and a new genus of the Orthoseirales from Patagonia, Argentina, with comments on systematic affinities within the Order
FIGURES 54–71. Orthoseira frenguellii spec. nov. Specimens of type population.54–64. LM. 65–71. SEM. 54–62. Valve views showing population variability. 54–55. Holotype. 63–64.Valves in girdle view. 65–67. External valve views. 65. Whole frustule in oblique view. 66. Detail of valve center showing external openings of carinoportulae (arrow). 67. Detail of valve in girdle view; note the thickened interstriae. 68–70. Internal valve views. 68. Whole valve. 69. Detail of valve center; note the internal opening of the carinoportula (arrow) and packed slits (arrowhead). 70. Detail of areolae showing the siliceous ingrowths on the foramina. 71. Valve in girdle view; note copulae with rows of poroids. Scale bars = 10 μm (Figs 54–65, 68, 71), 5 μm (Fig. 67), 2 μm (Fig. 66); 1 μm (Figs 69–70). Bar length is the same in all LM figures.
FIGURES 15–24 in New species and a new genus of the Orthoseirales from Patagonia, Argentina, with comments on systematic affinities within the Order
FIGURES 15–24. "Cyclotella stipata Frenguelli" from Tierra del Fuego (Figs 15, 18, 20, 22) and Limay River basin (Figs 16–17, 19, 21, 23–24). 15–17. LM. Valve views. 18–23. SEM. 18–20. External valve views. 18–19. Whole valves, note marginal spines and spinules lined up with the striae. 20. Detail of central hyaline area showing external openings of carinoportulae (arrow) and rimoportulae (arrowhead). 21–24. Internal valve views. 21. Whole valve. 22–23. Details of valve center, note the internal openings of carinoportulae (arrow) and rimoportulae (arrowhead). 24. Detail of striae arrangement. Scale bars = 10 μm (Figs 15–18, 21), 5 μm (Figs 19, 24), 2 μm (Figs 20, 22–23).
FIGURES 23–32 in Orthoseira groenlandica sp. nov., a new aerophilic diatom (Orthoseirales, Bacillariophyta) species from Greenland
FIGURES 23–32. Orthoseira groenlandica Goeyers, Kochman-Kędziora & Van de Vijver, sp. nov. SEM pictures taken from the holotype material (BR-2801, Qeqertarsuaq, Greenland, sample DM27). 23. Frustule in girdle view showing the structure of the cingulum. 24. Entire girdle band. 25. SEM external view of a valve in oblique view showing the step in the mantle (arrows). Fig. 26. SEM external view of a valve in oblique view lacking the step in the mantle. 27–29. Three external views of an entire valve. Note the typical siliceous scales in the valve center, the marginal ring of ridges and the scattered, short teeth-like spines. 30. SEM external oblique detail showing the irregular valve face ornamentation with papillae, thin spines and siliceous plates in the valve center. 31. SEM external detail of the marginal spines. Note the granulate surface structure of the girdle band. 32. SEM external detail of the surface structure in the central area obscuring the view on the carinoportulae. Scale bars = 10 µm (Figs 23–31), 1 µm (Fig. 32).
FIGURES 1–22 in Orthoseira groenlandica sp. nov., a new aerophilic diatom (Orthoseirales, Bacillariophyta) species from Greenland
FIGURES 1–22. Orthoseira groenlandica Goeyers, Kochman-Kędziora & Van de Vijver, sp. nov. LM pictures taken from the holotype material (BR-2801, Qeqertarsuaq, Greenland, sample DM27). 1–6. Solitary frustules in girdle view. 7–22. LM pictures of valves in valve face view showing the rather constant number of carinoportulae and the irregularly spaced marginal spines. Figure 10 represents a teratological valve. Scale bar = 10 µm.
FIGURES 33–35 in Orthoseira groenlandica sp. nov., a new aerophilic diatom (Orthoseirales, Bacillariophyta) species from Greenland
FIGURES 33–35. Orthoseira groenlandica Goeyers, Kochman-Kędziora & Van de Vijver, sp. nov. SEM pictures taken from the holotype material (BR-2801, Qeqertarsuaq, Greenland, sample DM27). 33. SEM internal view of a complete valve. 34–35. SEM internal details of the carinoportulae showing the slits between the carinoportulae. The white arrows in Fig. 34 indicate the slit-like openings scattered between the areolae. Scale bars = 10 µm (Figs 33–34), 1 µm (Fig. 35).
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