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foraminifers

  • plural
    of foraminifer.
    foraminifer
    noun
    any chiefly marine protozoan of the sarcodinian order Foraminifera, typically having a linear, spiral, or concentric shell perforated by small holes or pores through which pseudopodia extend.

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The study focuses on three major groups of calcifying plankton: coccolithophores, foraminifers, and pteropods.

From Science Daily Feb. 8, 2026

Among living foraminifers, Lagena, Globigerina, and Nodosaria are known in the later Cambrian or early Ordovician.

From Climatic Changes Their Nature and Causes by Ellsworth Huntington

At one moment he has to deal with the bones of some large mammal scattered through a deposit of superficial gravel, at another time with the minute foraminifers and ostracods of an upraised sea-bottom.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various

Beneath the reef are thick beds of limestone, composed largely of the remains of foraminifers, which cover the lavas and fragraental materials of the old submarine volcano.

From The Elements of Geology by William Harmon Norton

To the west its waters were clear and on its floor the crumbled remains of foraminifers gathered in heavy accumulations of calcareous ooze,— the white chalk of France and England.

From The Elements of Geology by William Harmon Norton

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