A quantity of ancient materials may be observed in the walls.

Tests confirmed that the work was of ancient materials, but scholars continued to argue.

However, soil is the result of evolution from more ancient geological materials.

Many of its houses were built from ancient materials.

"It's the first time anyone has reported using this technique in ancient material to identify an infectious agent."

In general, modern drawing implements are improvements on ancient materials.

Many of the village houses appeared to be built of ancient materials.

Comet Wild 2 should contain much of this ancient material, making it an ideal choice for study.

Contamination remains a major problem when working on ancient human material.

That restriction still leaves us ample modern and ancient material to consider.