Bible Encyclopedias
Nummulite

1911 Encyclopedia Britannica

A. d'Orbigny's name for a genus of Perforate Foraminifera, distinguished by the flattened, lenticular discoid shell of many turns, finely perforated; chambers subdivided by incomplete septa into squarish chamberlets. This genus is especially abundant in Eocene Limestones, which attain great thickness around the Mediterranean basin; the Pyramids of Egypt are built of it.

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Nummulite'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​n/nummulite.html. 1910.