Ward's® geologic time scale poster explores over 4 billion years of Earth's History

• Detailed drawings of major life forms
• Eons, Eras, and Periods set to scale

WARD’S Phanerozoic Geologic Time Scale Chart
Journey through over 500 million years of Earth’s geologic history in this detailed accounts of the major eras, periods, epochs and stages of the Phanerozoic Eon. In colorful depictions and key stratigraphic information, both Global and North American standards of this timeline are addressed. Boundaries and divisions are based on the latest determinations published by the International Commission on Stratigraphy. Over 80 detailed drawings highlight some of the major life forms and guide fossils present during each time period. Size: 23" x 37".
WARD’S Precambrian Geologic Time Scale Chart
A first in the education world, this time scale chart is the only one of its kind devoted specifically to the early life and evolution of our planet. Explore over 4 billion years of early Earth history before the start of the Cambrian period. This unique poster outlines the eons, eras, periods, and early life forms of the incredible Precambrian, all set to scale. Simple line drawings bring to life remarkable organisms found preserved in rocks over one billion years old and more. Like its companion Phanerozoic chart, this Precambrian Geologic Time Scale Chart is based on the latest information available today.