8What is an Index Fossil?Index fossils are used to help Geologists match different rock layers that may be located far apart.Helps to tell the relative age of the rock layers.
9What makes a Fossil an Index Fossil? The fossil must be found in a lot of locations around the globe.They must have lived during a distinct time period. That means Scientists know that they lived and became extinct during a set time period. They’re not found in every layer, just one layer.
10Find the Index Fossils?BECAUSE IT’S FOUND IN ONLY ONE LAYER OF ROCK, WE CAN INFER THAT THIS ANIMAL LIVED AND BECAME EXTINCT IN A SHORT AMOUNT OF TIME. THAT MAKES IT A GOOD INDEX FOSSIL.
11THOUSANDS OF MILES APART Find the Index Fossils?BECAUSE THE FOSSIL IS FOUND IN LAYERS IN DIFFERENT PLACES ON THE EARTH IT MAKES A GOOD INDEX FOSSIL.THOUSANDS OF MILES APART