Foraminiferan protozoan shell, SEM

Foraminiferan protozoan shell, SEM

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Credit: MANFRED KAGE/SCIENCE PHOTO LIBRARY

Caption: Foraminiferan protozoan shell. Coloured scanning electron micrograph (SEM) of the shell (test) of an unidentified foraminiferan. Foraminifera are single-celled protozoa that construct and inhabit shells composed of several chambers. These are usually penetrated by pores through which the cellular content is extruded. The organisms live in the sea or salt-water lakes. The shells form an important component of chalk. In past geological ages, foraminifera were so numerous that their shells, largely composed of calcium carbonate, have formed immense fossil deposits, seen today as limestone. Magnification unknown.

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Keywords: animal, calcium carbonate, coloured, foraminifera, foraminiferan, invertebrate, invertebrates, nature, plankton, planktonic, protozoa, protozoan, scanning electron micrograph, sem, shell, test, wildlife, zoology, zooplankton

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