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Answer for the clue "Large fossil protozoan of the Tertiary period ", 9 letters:
nummulite

Word definitions for nummulite in dictionaries

Wikipedia Word definitions in Wikipedia
thumb|left|250px|Fossil nummulites in Urbasa , Navarre A nummulite is a large lenticular fossil , characterized by its numerous coils, subdivided by septa into chambers. They are the shells of the fossil and present-day marine protozoan Nummulites , a type ...

Wiktionary Word definitions in Wiktionary
n. A protozoan from the Tertiary period, known only as fossils

WordNet Word definitions in WordNet
n. large fossil protozoan of the Tertiary period

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Nummulite \Num"mu*lite\, n. [L. nummus a coin + -lite: cf. F. nummulite.] (Paleon.) A fossil of the genus Nummulites and allied genera.

Usage examples of nummulite.

The ascending slopes were not, as I had thought, formed of nummulite limestone but of Jura rock, pale red in colour and of a striking aspect at sunset.