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Sphaerozoum ovodimare.
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Tholoma metallasson.
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Thalassophysa (thal-ass-owe-fie-sa) is a large radiolarian protist has a cytoplasm that is full of bubbles. The bright area in the centre of the cell is the capsule and within this lie most of the cytoplasmic organelles. The yellow colour comes from symbiotic algae living in association with this protozoa. The algae are dinoflagellates from the genus Scrippsiella - the same genus is also found in symbiotic association with the by-the-wind sailor (Velella). The light region towards the outside is the region of the axopodia. This is an example of one of the four types of large amoebae which is common in the marine water column. Dark ground illumination, image by Dave Caron.
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Thalassophysa (thal-ass-owe-fie-sa), a spumellarian radiolarian in which the cytoplasm is very clearly differentiated into the condensed inner region contained within the capsule, and the outer frothy later. Numerous symbiotic dinoflagellates (Scrippsiella - which also occurs in the cnidarian Velella) can be seen as orange spots in the cell. 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 N. R. Swanberg.
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Calocyclas monumentum.
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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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The central capsules are worm-like. With oil droplets, nuclei, small pigment spots and yellow symbiotic algae.
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Living coenobium, with serpentine central capsules. Numerous yellow algal cells are scattered among the radial pseudopodia.
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Large colonial coenobium or jelly colony, and a single isolated amoeboid central capsule with oil droplet.
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Each shell contains numerous large granules
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Haeckels fiugure legend reads .... a small piece of the surface of a living coenobium, seen from the surface. Only four individuals are visible, the central capsule of which contains numerous small nuclei and a central oil-globule. The including spherical lattice-shell is provided with a few (one to four) larger apertures, which are prolonged into short cylindrical tubules. Through these latter radiate bundles of fine pseudopodia, branching and anastomosing, and forming a fine sarcode network between the alveoles of the calymma. On the surface of the alveolated jelly-sphere the pseudopodia form a dense radiating zone. Xanthella or yellow cells are everywhere scattered.
