[Free Registration/Login may be required to access all resource tools.] Patterns of biological evolution during the Phanerozoic Era.

A good brief review of The Cenozoic Era, which also includes links to more detailed information as well as a chart of its subdivisions.

A very in-depth article from the Universitat Munster regarding the trees of the Paleozoic Period.

Journey into the past while reading this comprehensive overview of the Ordovician Period that covers topics such as reef ecosystems, Paleozoic Fauna, fossil evidence, and climate and plate tectonics.

Journey into the past while reading this comprehensive overview of the Cambrian Period that covers topics such as the Cambrian Explosion, Burgess Shale fauna, trilobites, fossil evidence, and climate and plate tectonics.

Journey into the past while reading this comprehensive overview of the Silurian Period that covers topics such as life in the seas, invasion of land, fossil evidence, and climate and geology.

Journey into the past while reading this comprehensive overview of the Mississippian Period that covers topics such as life in the seas, tetrapods and other life on land, fossil evidence, and climate and tectonics.

This terrific site from the National Museum of Natural History gives general information about the Burgess Shale and the fossils found within. Use the links to go the Burgess Shale specimens page where there are drawings of many of the...

Presents some facts about crinoids, a marine animal abundant during the Paleozoic Era, with many fossil species present in Indiana. This animal can still be found in the Caribbean Sea today.

Explore this impressive compilation of scientific research focused on the Carboniferous Period in the late Paleozoic Era.

Use this study guide to understand the history of Paleozoic Life.

Explains the importance of index fossils for the dating and chronology of events in the fossil and geological records. Discusses uses and examples of index fossils in the Cenozoic, Mesozoic, and Paleozoic Eras.

College-level biology book covers the Late Paleozoic geologic time period in Earth's history. See photographs of fossil evidence from that era in addition to diagrams to help with understanding.

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.

A virtual tour of a Silurian reef. Includes information on geologic principles, the geologic time scale, and the Silurian period. Explores Silurian reefs and reef organisms.

The Museum of Paleontology at Berkeley offers an online geological time machine which allows you to catch a glimpse of ancient eras in earth's history. Click into an "Era" to learn about its stratigraphy, life forms, localities, and...

An overview of the geography and geology covering the landscape of what is now the state of Arkansas.Both have had important influences on the history and cultural development of Arkansas.

This comprehensive study guide covers the main terms and concepts needed for a unit on the evolution of multicellular life.

An overview of the different geologic time periods and how each affected the area of what is now the state of Arkansas.

[Free Registration/Login Required] This flipchart is a lesson on the geologic history of the Earth. It covers the four main eras of the geologic time scale: Precambrian, Paleozoic, Mesozoic, and Cenozoic. Characteristics of each era are...

[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...