nummulites


From The Collaborative International Dictionary of English v.0.48:

Nummulites \Num`mu*li"tes\, n. [NL. See Nummulite.] (Paleon.)
   A genus of extinct Tertiary Foraminifera, having a thin,
   flat, round shell, containing a large number of small
   chambers arranged spirally.
   [1913 Webster]
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