Calciferous epoch
| (Geol.) | an epoch in the American lower Silurian system, immediately succeeding the Cambrian period. The name alludes to the peculiar mixture of calcareous and siliceous characteristics in many of the beds. See the Diagram under Geology. |
See also: Calciferous
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.