Trace fossils such as footprints form in a similar way. The footprint forms a natural mould and sediment then fills it forming a cast. Uplift, weathering and erosion: why we can find fossils How do we ...

They’re chosen on the basis of being very common fossils that are found only in rocks laid down in a narrow period of time. When we find an index fossil in rocks in different locations, it tells us ...

Fossils don’t just show how living things have changed; they can also help us understand ... For example, rocks that once formed the seafloor might be forced up to form a mountain range.

These kinds of fossils can be formed in two major ways ... time period are actually present and exposed on the landscape. If they are interested in finding the most ancient fossil apes, like ...

Opalized ammonite fossils are some of the most unique and spectacular paleontological specimens. They were formed through a ...

Unique to the Mazon Creek Formation in Illinois, it became its state fossil in 1989. Soft-bodied and relatively small (a living specimen would fit in a human hand), with its stalked eyes and long ...

However, fossils from these ancient forests are reshaping ... about the shared history between these ecosystems, which they said has been obscured by human activity and misinterpretation, and ...

Two species of marine molluscs dating back about 430 million years have been named Punk and Emo for their outlandish spiky appearance ...