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A large, coin-shaped, fossil foraminifer of the genus Nummulites, widely distributed in limestone formations from the Eocene Epoch to the Miocene Epoch of the Cenozoic.

[From New Latin Nummulītēs, type genus, from Latin nummulus, diminutive of nummus, coin, probably from Greek nomimos, customary, legal; see nem- in Indo-European roots.]

num′mu·lit′ic (-lĭt′ĭk) adj.


(ˈnʌmjʊˌlaɪt) or


(Palaeontology) any of various large fossil protozoans of the family Nummulitidae, common in Tertiary times: phylum Foraminifera (foraminifers)
[C19: from New Latin Nummulites genus name, from Latin nummulus, from nummus coin]
nummulitic adj
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nummulite - large fossil protozoan of the Tertiary periodnummulite - large fossil protozoan of the Tertiary period
foram, foraminifer - marine microorganism having a calcareous shell with openings where pseudopods protrude
family Nummulitidae, Nummulitidae - a family of fossil protoctists
References in periodicals archive ?
The Alyane Permit lies directly within the prolific nummulite limestone trend where many of Tunisia's and Libya's largest fields have been discovered.
1 Facies Depositional Environment Facies Frequency Code of the Anguru Section JA JA1 Lagoon Inner Ramp Abundance JA2 Abundance JB JB1 Nummulite Inner to Common Bank/shoal Mid Raap Common Abundance JC JC1 Open marine Mid Ramp Abundance Common JC2 Abundance
in this microfacies a subfacies has been identified, namely Nummulites /Orbitolites bioclast pelloidal packstone.
They are gray to green and contain benthic (miliolids, Nummulites, Neorotalia, Elphidium, Operculina, Amphistegina and textularids) and planktonic (Paragloborotalia mayeri and Globigerina spp.
He described the Thebes Formation as massive to laminated limestone with flint bands or nodules and marl rich with Nummulites and planktonic foraminifera.
Nummulites are samples of these creatures which expanded greatly and known as kings of carbonate platforms.