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A colonial spumellarian radiolarian, image and identification by Dave Caron. This is an example of one of the four types of large amoebae which is common in the marine water column.
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Dicranastrum furcatum.
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A colonial spumellarian radiolarian (Collosphaera sp.) composed of numerous central capsules (purple porous spheres) connected to one another by cytoplasmic strands and enclosed in a clear gelatinous sheath secreted by the radiolarian cytoplasm.
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A light microscopic view of a living nassellarian radiolarian (Eucyrtidium acuminata) showing the reddish pigmented cytoplasm within the siliceous, conical shell.
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Section of cell with central capsule, associated black pigment, central nucleus, and calymma. Inset is an endoplasmic vacuole.
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Haeckel says: The central capsule contains numerous spherical nuclei and is enclosed by the hyaline calymma, which forms conical sheaths around the spines.
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Chitonellus fasciatus Quoy; ant, anterior end.
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Globe-fish (Orthagoiscus), and Sun-fish (Tetraodon).
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Platysomatichthys Hippoglossoides (Walbaum). Greenland Halibut
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Radiolaires. 1, Arachnocorys circumtexta (Haeck.); 2, Amphilonche heteracantha (Haeck.)
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Glutinous Hag (1) Lancelet (2).
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Aptychus of Ammonite (Trigonellites latus), Cameridge Clay, Ely.
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Figure 5. Lodevohymen lapeyriei gen. et sp. n.(?Diaphanopterodea), holotype LdLAP 556: A photograph of wing, B drawing of wing (Scale bar represents 3 mm).
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David A. Grimaldi, Antonio Arillo, Jeffrey M. Cumming, Martin Hauser
Zookeys
Figure 11.a-d Myanmyia asteiformia Grimaldi, gen. et sp. n. (unplaced to family), in Burmese amber (holotype, AMNH Bu1616) a Anteroventral detail of head b dorsal habitus, as preserved c pretarsus. d apex of abdomen, ventral view.
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Sphaerozoum (sphere-owe-zoo-um), detail of the surface of a colony, in which many individual organisms can be seen. In the centre of each of the bright regions is the capsule. This is an example of one of the four types of large amoebae which is common in the marine water column. Dark ground image by Dave Caron.
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Acrosphaera (ack-row-sphere-a) spinosa, spherical colonial radiolarian. This is an example of one of the four types of large amoebae which commonly occur in the marine water colum. Dark ground image by N. R. Swanberg.
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The central capsules are worm-like. With oil droplets, nuclei, small pigment spots and yellow symbiotic algae.