Fossils

Fossils are like nature’s time capsules, showing what life on Earth was like millions of years ago. They give scientists clues about plants and animals that lived long before humans.

A fossil is the preserved remains, traces, or imprints of an ancient organism. These can include bones, shells, leaves, or even footprints.

Fossils form when parts of living things are buried and preserved through processes like mineralization or by leaving impressions in rock.

Scientists who study fossils are called paleontologists. By examining fossils, they understand the evolution of life and track changes in the planet’s climate.

Some of the oldest fossils ever found are from ocean bacteria, dating back nearly 4 billion years—almost as old as Earth itself.

Another example is megalodon teeth found in Utah. These fossils show that the area was once covered by the ocean. Similarly, the plant fossils found in Antarctica reveal that it was once warm and filled with forests.

Even dinosaur skeletons in museums are fossils. They show how dinosaurs looked, moved, and lived.