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"Fossil Foraminifera (Nummulites) in limestone." -Thomson, 1916

Foraminifera

"Fossil Foraminifera (Nummulites) in limestone." -Thomson, 1916

Nummulite limestone.

Nummulite Limestone

Nummulite limestone.

Nummulite limestone.

Nummulite Limestone

Nummulite limestone.

A nummulite, a coiled fossil.

Nummulites

A nummulite, a coiled fossil.

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.

Nummulites Nummularia

This illustration shows the calcareous shell Nummulites nummularia. These shells are mostly very small,…