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Texas State Historical Association
Texas State Historical Association: Texas Geology Map [Pdf]
A black and white outline map that can be colored in, using the key provided, to show the geologic periods in Texas history. A full color map is available in the Texas Almanac, which is free to download from the main website.
Woods Hole Oceanographic Institution
Woods Hole Oceanography Institute: History of the Earth
This interactive timeline reveals key geologic and biological events starting back 4.8 billion years to the present.
CK-12 Foundation
Ck 12: Earth Science: Geologic Time Scale
[Free Registration/Login may be required to access all resource tools.] How the geologic time scale is divided.
Center for Educational Technologies
Earth Floor: Geologic Time
This is a nice explanation of geologic time and Earth's major eras. Although this site is designed for younger students, it is mostly text with few images.
CK-12 Foundation
Ck 12: Plate Tectonics and Seas of the Paleozoic and Mesozoic Era Study Guide
[Free Registration/Login may be required to access all resource tools.] Provides a brief overview of plate tectonic activity during the Paleozoic and Mesozoic eras and the changes in sea level that occurred. Includes some questions to...
CK-12 Foundation
Ck 12: Biology: Evolution of Multicellular Life Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on the evolution of multicellular life.
CK-12 Foundation
Ck 12: Earth Science: Geologic Time Scale Study Guide
Take a quick look at Earth's geologic time scale.
PBS
Nova: A Brief History of Earth
This timeline is a good resource if you are looking for brief descriptions of the geologic periods. Descriptions include pictures of common organisms for each period and the range of time covered by each period.
Children's Museum
Children's Museum of Indianapolis: Geologic Timeline
Here is an excellent example of a picture timeline. Follow the Eras of the Earth from Cenozoic all the way down to Precambrian with the use of fossils.
ClassFlow
Class Flow: Life & Geologic Time
[Free Registration/Login Required] This Flipchart accompanies chapter 14 in the Glencoe Earth Science text. The flipchart contains pictures that help students learn about Geologic time: Paleozoic, Mesozoic, Cenozoic and explains...