nummulitic

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num·mu·lite

N0194300 (nŭm′yə-līt′)n. 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.