Fossilized [adjective]

Although shark skeletons are made of cartilage, the animals’ backbones can become hardened and strengthened by deposits of calcium salts, which can then be fossilized.

Among the debris were several pieces of sandstone marked by black, fossilized plant-remains.

Towards the end of the following summer, however, one of the tusks and an entire side of a fossilized animal were exposed.

Petrified moss or Indian arrow-heads, for specimens of lava or fossilized fern.

Mineralized water circulated through and gradually fossilized the buried trees, changing many to opal.

If a monologue is fossilized poetry, its true rendering should restore the original being to life.

Had a bombshell been exploded among the fossilized professors it had been less disturbing.

Fossilized antelope bones have been found in western Nebraska that are estimated to be two million years old.

A fossilized domestic servant of the present era would probably astonish the people of the twenty-eighth century.

In the geological record millions of specimens are fossilized and laid away in nature's great cabinet.