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Learn all about ancient lifeforms preserved in rock. Dan R. Lynch, author of many Rocks & Mineral... Dig into the History of Life!Become a young paleontologist.
This video lesson explains how fossils found in rock layers can provide evidence for changes in a landscape over time. (NGSS 4-ESS1-1: Identify evidence from patterns in rock formations and...
Scientists study the facts about each fossil they find to find out clues about where they animal may have lived, what they ate, how old they were and how they died. There are two main types of fossils including mold fossils and petrified fossils.
Top rock layers wear away by rain and wind, revealing the fossils. Or, paleontologists (scientists who study fossils) dig deep down into Earth's surface to find these fossils. The following video animates the process:
5 kwi 2021 · Petrified rock is a type of fossil known as a replacement fossil. Replacement fossils are replicas of things that were once alive, such as trees, sea creatures, or the bones of an animal. The living thing dies and is trapped in the ground. As it lays there, it is covered by mineral rich water.
Dinosaur Discoveries: Fossils. Dr. Scott explains what fossils are, and how paleontologists study them.
The fossil is the shape of these hard parts in the rock. Other fossils are imprints on soft material that later hardened into rock. For example, scientists have found dinosaur footprints in rock that formed from mud.
