Conchylaceous
Con`chy`la´ceous
| a. | 1. | Of or pertaining to shells; resembling a shell; as, conchyliaceous impressions. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
| a. | 1. | Of or pertaining to shells; resembling a shell; as, conchyliaceous impressions. |