What does nummulite mean?
A nummulite refers to a large, fossilized foraminiferan, a type of marine protozoan. Characterized by its disc-shaped, spiral shell, nummulites are commonly found in limestone rocks and serve as index fossils for dating geological formations. They are particularly significant in the study of Eocene deposits. Nummulites are usually studied in formal or technical contexts, such as geology or paleontology, where their role in Earth's history and rock formations is discussed. Understanding nummulites helps scientists reconstruct ancient marine environments and the evolution of life on Earth.
nounA nummulite is a type of large, fossilized foraminiferan, a marine protozoan. It is typically disc-shaped and has a spiral shell.
- A type of fossilized foraminiferan.
- A type of large, spiral-shelled protozoan.
"The geologist carefully extracted the nummulite fossil from the limestone rock."
"The nummulite fossil was found in the Eocene limestone."
"Nummulites are often used as index fossils to date rocks."
countable, used to refer to multiple specimens
"The team discovered several nummulites in the excavation site."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of nummulite
The term 'nummulite' originates from the Latin word 'nummulus,' meaning 'little coin,' likely due to its coin-like shape. It is related to the field of foraminiferal studies and paleontology. The word has been used in English since the 18th century.
Usage notes
Formal or technical contexts, often in geology or paleontology.