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7 results for “Papposphaeraceae”
Fig. 8 in Papposphaera heldalii sp. nov. (Haptophyta, Papposphaeraceae) from Svalbard
Fig. 8. Schematic drawings of coccolith structures in species of Papposphaera (not drawn to scale). a – body coccoliths; b – calyx design; c – coccoliths with central processes; A – P. sagittifera; B – P. sarion; C – P. arctica; D – P. iugifera; E – P. heldalii. Notice that alternative shapes are included for some species (A/a, B/a, D/a) and that the P. sarion design for a coccolith with a central process (B/c) is potentially as variable as B/a.
Figs 2–7 in Papposphaera heldalii sp. nov. (Haptophyta, Papposphaeraceae) from Svalbard
Figs 2–7. Papposphaera heldalii SEM images of cells from the Svalbard region collected during Jan. 2014 (Figs 4–5) and March 2014 (Figs 2–3, 6–7). 2 – cluster of coccoliths shown at high magnification. Notice in particular details of the calyx and coccolith rim calcification. The arrows point to extensions from the pentagonal elements separating the rod-like elements. See also ruptures in the organic base plates of body coccoliths; 3 – whole cell (type specimen) showing the general disposition of types of coccoliths within the coccosphere. A single coccolith (enlarged in Fig. 6) shows the central area calcification of a calicate coccolith; 4 – whole cell. Notice the difference in length of the central process among the two clusters of coccoliths carrying these. See also the conspicuous size differences between neighboring body coccoliths; 5 – body coccoliths showing large individual size differences; 6 – detail of central area calcification in a coccolith that carries a central process (broken away here); 7 – detail of coccolith rim from coccoliths that carry a central process. The arrows point to extensions from the pentagonal elements separating the rod-like elements.
Fig. 1 in Papposphaera heldalii sp. nov. (Haptophyta, Papposphaeraceae) from Svalbard
Fig. 1. Svalbard sampling sites during MicroPolar cruises. The type locality of P. heldalii is marked by a square, and arrows point to additional sampling sites yielding P. heldalii material.
Fig. 11 in Ventimolina stellata gen. et sp. nov. (Haptophyta, Papposphaeraceae) from Warm Water Regions
Fig. 11. Schematic drawings of Ventimolina stellata BC and CFC drawn approximately to scale. A – side view of BC; B – top view of BC; C – top view of CFC; D – side view of CFC.
Figs 2–6 in Ventimolina stellata gen. et sp. nov. (Haptophyta, Papposphaeraceae) from Warm Water Regions
Figs 2–6. Ventimolina stellata TEM whole mounts of a single specimen from the Andaman Sea. 2 – whole cell (holotype) with details accounted for in Figs 3–6; 3 – details of circumflagellar coccoliths. The arrow points to a distally slightly convex BC in side view; 4 – detail of body coccolith in lateral view showing clearly the rim and central area calcification and the central superstructure which is slightly convex distally; 5 – body coccoliths showing the single layer rim calcification; 6 – details of the body coccolith calyx ('windmills').
Fig. 1. A in Ventimolina stellata gen. et sp. nov. (Haptophyta, Papposphaeraceae) from Warm Water Regions
Fig. 1. A – study region and the Andaman Sea; B – area of investigation in the western part of the Andaman Sea, off the coast of Thailand. Transect sampling is indicated by lines of stations, contour lines illustrate bathymetry by isolines of 5, 10, 20, 50, 100 and 200 m bottom depth. The type locality of V. stellata is encircled.
Figs 7–10 in Ventimolina stellata gen. et sp. nov. (Haptophyta, Papposphaeraceae) from Warm Water Regions
Figs 7–10. Ventimolina stellata SEM images of two cells from the NW Mediterranean. 7 – complete coccosphere; 8 – detail of BC from the cell shown in Fig. 7. The arrow points to a coccolith calyx that is clearly convex; 9 – complete coccosphere. The arrow points to a CFC that clearly shows the central are calcification and further lends support to the interpretation of the calyx being perpendicular to the longest axis of the CFC; 10 – detail of BC from the cell shown in Fig. 9. A distinctly convex coccolith calyx is pointed out by arrow.
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OpenNeuro
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