Nummulites Nummularia Small 320×320 Medium 640×639 Large 1024×1023 Download Tiff Original 2403×2400 | (1.7 MB) Description This illustration shows the calcareous shell Nummulites nummularia. These shells are mostly very small, and yet through their abundance they have been very important in limestone-making. Keywords calcareous, nummularia, nummulites, shell, shells Galleries Geology Source: James D. Dana, New Text-book of Geology (New York: Ivison, Blakeman & Company, 1883) 66
