Vocabulary Entry

nummulite

|noun

noun

A type of fossilized shell, typically found in limestone, that belongs to a group of extinct marine organisms known as foraminifera.

Example Sentences

"The nummulite is an important index fossil for dating certain geological layers."

"Geologists often study nummulites to understand ancient marine environments."

"During her field trip, she found several nummulite fossils embedded in the rock."