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September 4, 2011

Geology Word of the Week: N is for Nummulite

def. Nummulite: 1. A fossil or living foraminiferan of the Nummulites genus (or a related genus) that has a disc-like, spiral, calcareous skeleton. Fossil nummulites range up to several inches in size, making them quite impressive protozoa (single-celled, eukaryotic organisms). Nummulite fossils are common in Tertiary rocks, particularly in the Mediterranean area. The term nummulite originates from the Latin word “nummulus,” which means coin. 2. The unwitting star of a …

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