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Arkansas Geologic Survey: Geologic History of Arkansas
An overview of the different geologic time periods and how each affected the area of what is now the state of Arkansas.
Science Struck
Science Struck: Paleozoic Era: Major Events and Important Facts
Provides a detailed discussion of the Paleozoic Era and a timeline of its periods and epochs. Looks at geological and tectonic events, climate changes, flora and fauna, and a mass extinction event.
Science Struck
Science Struck: Flora and Fauna of the Ordovician Period
Describes plants and animals that lived during the Ordovician Period, where it falls in the geologic time scale, tectonic activity happening then, the climate and environment, and extinction events.
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: History of Paleozoic Life Study Guide
Use this study guide to understand the history of Paleozoic Life.
University of California
Ucmp: Paleozoic Era: Stratigraphy
This site contains a chart showing the progression of the Paleozoic Era. Each section of the chart leads to information about the geological, biological, and climatic elements of a specific period of the era.
Sophia Learning
Sophia: Paleozoic Era: Lesson 2
This lesson illustrates the paleozoic era of the history of the earth. It is 2 of 4 in the series titled "Paleozoic Era."