Examples from the Web for calcareous
In other forms the union of the grains by a calcareous or ferruginous cement necessitates the existence of distinct pylomes.
The solid surface of the earth is mainly composed of gravel, of calcareous, and argillaceous strata.
Compare the Ascula of the calcareous sponge on the Frontispiece, Fig. 7, 8.The History of Creation, Vol. II (of 2)|Ernst Haeckel
The tubular, up-curved, calcareous spines sometimes occur only on one side of the shell, and often only in the lower part.A Monograph on the Sub-class Cirripedia (Volume 2 of 2)|Charles Darwin
The unnaturally thick layer of calcareous material continues to grow.