conchitic--prophetes.ai

conchitic, a. Geol.
  (kɒŋˈkɪtɪk)
  [f. conchite¹ + -ic.]
  Abounding in (fossil) shells, conchiferous.

1811 Pinkerton Petral. I. 441 A conchitic limestone. 1865 in Page Handbk. Geol. Terms.

Oxford English Dictionary