Enchanted Learning
Enchanted Learning: The Triassic Period
Information about the Mesozoic Era, including details and extensive links about the geology and biology of the period. A very thorough site that is geared toward 5 - 8th grades, but useful for all.
Other
Hvpm: Mass Extinctions
An overview of the mass extinctions throughout earth history. Each mass extinction has a link to its own page with a list of its possible causes and the species that were most affected.
CK-12 Foundation
Ck 12: Earth Science: History of Paleozoic Life
[Free Registration/Login may be required to access all resource tools.] Patterns of biological evolution during the Paleozoic Era.
CK-12 Foundation
Ck 12: Earth Science: History of Paleozoic Life
[Free Registration/Login may be required to access all resource tools.] Patterns of biological evolution during the Paleozoic Era.
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.