Fossils can be broadly divided into body fossils and trace fossils ... petrified wood (6), graptolite (7), fish (8), smooth and jagged-margined leaves (9 and 10), fern (11), shark tooth (12), cave ...

The characteristics of the rocks that hold fossils can be as informative as the fossils themselves. There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all ...

As these changes have occurred, organisms have evolved, and remnants of some have been preserved as fossils. A fossil can be studied to determine what kind of organism it represents, how the ...

Although dinosaurs lived many millions of years ago, we know that they existed because some of them turned into fossils when they died. Watch our animation to discover how this happened, and explore ...