Fossil

Example:

Imagine walking into an old, dusty room and finding your grandmother's favorite chair with an indentation where she always sat. This chair is like a snapshot of the past, capturing a trace of her presence, much like how fossils are the preserved traces of organisms that lived long ago. Just as the indentation in the chair tells a story about your grandmother's habits and presence, fossils reveal the existence and behavior of ancient life, preserving a moment in time for us to study and understand.