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<!--Need a quick reference to the geologic time scale of Earth's history? Try out our geotimescale application on your iPad! Find out, for example, when dinosaurs ruled the world or when reptiles first appeared. This is a complete reference for students, educators, professional geologists, or anyone interested in geology. There are two different views featured: Geologic Time Scale and Scale with Ages. Just tap to select the view and then scroll through the time scale. Version 1.0 requires iPad OS 3.2 or later.-->
Requirements: iPad, iOS 4.2
Click the screen to see other views.
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Tasa Graphic Arts, Inc.
geotimescale enhanced HD
geotimescale enhanced HD