nummulitic
/nʌmjʊˈlɪtɪk/Geology
adjective
Containing or consisting of nummulites; especially designating an Eocene limestone formation which outcrops widely from North Africa and the Alps to east Asia.
Origin
Mid 19th century; earliest use found in Charles Lyell (1797–1875), geologist. From nummulite + -ic.