foraminifera

noun

1. Synonym of foraminifer (“any of a large group of aquatic amoeboid protists of the subphylum Foraminifera, characterized by streaming granular ectoplasm that among other things is used for catching food, often with a calcareous shell with many holes through which pseudopodia protrude”).

   “This elegant Foraminifera has long been one of the best known of recent species; in its young state it is one of the most abundant organisms in the Cuban sand: in this immature form it appears a Foraminifera of the ordinary spiral type; […]”

   “By the slow accumulation of dead shells, corals, &c., cemented by the smaller tests of foraminifera, the Coralline Crag eventually attained a thickness of fifty feet.”

   “The best method of examining chalk for minute Foraminifera is this: […] The balsam gradually penetrates into the cells, the black rings of the air-bubbles disappear, and the minute, frequently very elegant cells of the Foraminifera become visible.”

   “Several forms were met with [at 2,800 fathoms] which apparently do not occur on the surface, particularly a number of species of a group which is so far as we know entirely undescribed. It seems to be intermediate between the Radiolarians and the Foraminiferas, resembling the former in the condition and appearance of the sarcode and in the siliceous composition of the test, and the latter in external form.”

   “Careful preparation of a fragment of chalk usually brings to light remains, sometimes well preserved, of foraminifera (Rotalina ornata, Cristellaria rotulata, Globigerina bulloides).”

2. (form-of, plural)plural of foraminiferon
3. (form-of, plural)plural of foraminiferum