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6 results for “Quaternariella”
Figs 1–2. Collection sites. 1 in Coccolithophorids in Polar Waters: Quaternariella and Porsildia gen. nov. Mercedesia gen. nov., Ericiolus,
Figs 1–2. Collection sites. 1 – map of the Arctic (Greenland) indicating sampling sites; 2 – map of the Antarctic (Weddell Sea) showing the location of sampling sites.
Figs 36–39 in Coccolithophorids in Polar Waters: Quaternariella and Porsildia gen. nov. Mercedesia gen. nov., Ericiolus,
Figs 36–39. Porsildia acerviphora. TEM whole mounts from Arctic Station, West Greenland, collected during 1990. 36 – cell with incomplete flagellation (only one flagellum visible); ten flagellar pole coccoliths with a central process; body coccoliths with an irregular rim formed by a mixture of differently shaped elements with squares (arrow) and pentagons (arrowhead); 37 – holotype; arrow points to a central appendage termination which is clearly divided into two elongate parallel elements; 38 – flagellar pole coccolith (detail from Fig. 36); 39 – high magnification of coccoliths (detail from Fig. 37); the central heap of elements as well as the irregular rim are evident; arrows point to square rim elements while toothed elements are denoted by arrowheads.
Figs 40–41 in Coccolithophorids in Polar Waters: Quaternariella and Porsildia gen. nov. Mercedesia gen. nov., Ericiolus,
Figs 40–41. Porsildia acerviphora. SEM whole mounts from Isfjorden, Svalbard, collected during august 2013. 40 – detail of anterior cell end showing flagellar pole coccoliths; notice the highly irregular rim on the coccolith that is laterally profiled; 41 – body coccoliths showing solid rims as well as heaps of elements covering the central parts of the coccolith central area; an arrow points to a particularly enlarged rim element.
Figs 28–35 in Coccolithophorids in Polar Waters: Quaternariella and Porsildia gen. nov. Mercedesia gen. nov., Ericiolus,
Figs 28–35. Quaternariella obscura. TEM whole mounts from Antarctica (EPOS) (Figs 28–29) and (Figs 30–35) West Greenland (Arctic Station). 28 – complete cell from the southern hemisphere; 29 – detail of the periplast from Fig. 28; 30 – Q. obscura combination cell (Arctic Station 1990) showing Papposphaera-like coccoliths along one side of the cell; arrows point to square rim elements and arrowheads to pentagonal elements; 31– a second combination cell (Arctic Station 1990) where heterococcoliths are visible as dark, oval structures; 32 – combination cell collected near Arctic Station during 1988; arrow points to square rim elements and arrowhead to pentagonal elements; 33 – Detail from Fig. 32; 34 – complete coccosphere with heterococcoliths that are similar to those shown in Figs 30, 32; 35 – detail from Fig. 34. Arrows point to square rim elements and arrowheads to pentagonal elements; notice also the irregular elements in the central area of the coccolith.
Figs 21–27 in Coccolithophorids in Polar Waters: Quaternariella and Porsildia gen. nov. Mercedesia gen. nov., Ericiolus,
Figs 21–27. Quaternarielle obscura. TEM whole mounts from the Arctic, viz. West Greenland/Arctic Station (Figs 21, 22) and NEW (Figs 23–27). 21 – groups of crystallites; 22 – complete cell with appendages; 23 – complete cell with curled up haptonema and nicely organized packages of crystallites; 24 – detail from Fig. 23 showing the boxed organization of crystallites; dissolution phenomena are obvious; 25, 26 – complete cells showing an even spread of crystallite packages; 27 – high magnification of single rhombohedral crystallites.
Figs 16–20 in Coccolithophorids in Polar Waters: Quaternariella and Porsildia gen. nov. Mercedesia gen. nov., Ericiolus,
Figs 16–20. Ericiolus frigidus. TEM whole mounts from Antarctica (EPOS). 16 – detail of anterior cell end showing the entangled armor of nannoliths with the most solid spine pointing outwards; 17 – detail of single nannoliths showing the tetrads of spines; the outwardly projecting spine (arrows) is more robust than the other three spines; 18 – more robust single nannolith; the arrow points to the outwardly directed spine; 19 – whole cell with extended flagella and a somewhat shorter haptonema; notice the highly characteristic heart-shaped cell body; 20 – a second example of a heart-shaped coccopshere with appendages.
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International Brain Laboratory public data
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OpenNeuro
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