Geologic Timescale
Title
Geologic Timescale
Description
Simple scale showing the division and chronology of geologic time as it is understood in North America. The Devonian Period occurred from roughly 410-360 million years ago, though opinions differ on the exact years.
Source
Decade of North American Geology
Publisher
United States Geological Survey, National Park Service, Department of the Interior
Date
2000
Format
image/gif
12kB
Language
US-en
Type
image
Coverage
North America, Prehistory
Files
Citation
“Geologic Timescale,” Winifred Goldring, State Paleontologist, accessed April 19, 2024, https://goldring.omeka.net/items/show/3.