"Les fossiles témoignent" is a French phrase that means "Fossils bear witness" or "Fossils testify" in English. Fossils are the preserved remains, traces, or impressions of prehistoric organisms that provide important evidence of the history of life on Earth. They can reveal information about the physical characteristics, behavior, and habitat of extinct species, as well as the geological processes that shaped the planet over millions of years. By studying fossils, scientists can reconstruct the evolutionary relationships between different species and track the changes that have occurred over time. Fossils are therefore a valuable source of information for understanding the history and diversity of life on Earth.