A fossil word.
The mineralized remains of an animal or plant.
An extremely old or outdated person.
Any preserved evidence of ancient life, including shells, imprints, burrows, coprolites, and organically-produced chemicals.
Anything extremely old, extinct, or outdated.
A member of a supposed prehistoric race that lived in caves or holes, a caveman.
A person who chooses not to keep up-to-date with the latest software and hardware.
A reclusive, reactionary or out-of-date person, especially if brutish.
Anything that lives underground.
The Eurasian wren, Troglodytes troglodytes.