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n. A large group of amoeboid protists, of the order Foraminifera, that are mostly marine.

noun-plural. An extensive order of rhizopods which generally have a chambered calcareous shell formed by several united zooids. Many of them have perforated walls, whence the name. Some species are covered with sand. See rhizophoda.

n. An order of Rhizopoda, belonging to the sub-kingdom Protozoa, furnished with a shell or test, simple or complex, usually perforated by pores (foramina), whence the name.

n. foraminifers

"This, indeed, is why oil companies employ fossil experts to identify particular strata of rocks, usually by microfossils, tiny creatures called foraminifera, for example, or radiolaria."

animal order   

rhizophoda   

confervae    reversibility    diatoms    petrography    railgun