Download Printable Geologic Time Scale

Index Fossil Lab
Name:
Index fossils are fossils used to define and identify geologic periods.
If geologists find specific fossils in sedimentary rock deposits they are able to estimate
how long ago the rocks formed.
In this lab you will identify and date fossils using the geologic time scale on the back of
this lab.
Record the sample number then use the key on the boxes to identify the fossil. Use the
geologic time scale to date the fossil.
Sample #
Species
Name
Era
Analysis:
How else can geologists estimate the age of rocks?
Period
Age
Geologic Time Scale
Geological Time Scale copyright 2005 - geology.com
http://www.geology.com/
http://geology.com/time.htm