PBS
Pbs Learning Media: Mammals Get Their Chance
In this video segment adapted from NOVA, animations of an asteroid hitting Earth are used to illustrate this widely accepted theory of dinosaur extinction and the resulting conditions that favored mammals.
CK-12 Foundation
Ck 12: Episd: Cenozoic Era the Age of Mammals
[Free Registration/Login may be required to access all resource tools.] The two periods of the Cenozoic Era, Tertiary and Quaternary, granted the mammals the time and space to evolve since the dinosaurs became extinct.
Estrella Mountain Community College
Estrella Mountain Community College: Class Mammalia: Got Milk?
This resource contains general information about the class Mammalia and their unifying characteristics.
University of California
University of California Irvine: Evolution of Mammals
A strong, comprehensive look at the evolution of mammals. Includes factors such as changing geologic structure of the earth and the different types found on different continents.
American Institute of Biological Sciences
Action Bioscience: Climate Change and Speciation of Mammals
An interview defining the correlation between climate change and speciation. Resources for support and for educators are offered.
CK-12 Foundation
Ck 12: Biology: Mammals: Evolution and Classification Study Guide
Explore the classification and evolution of mammals.
University of California
Ucmp: Eutheria: Systematics, Part
A cladogram that gives the evolutionary relationship between the different groups of mammals. Modern relationship drawing, somewhat difficult to interpret.
Other
Warrensburg Schools: The Evolution of Mammals
This site from Warrensburg Schools is a high school site that touches on most of the major information in the most common account of the evolution of mammals.
Other
Twow:the Gradual Evolution of Mammals
An interesting page, full of references that discusses the evolution of mammals. High level discussion.
Science Daily
Science Daily: Discovery of New Fossils in Gobi Desert
Internet science magazine ScienceDaily discusses fossils found in the Gobi desert, even dinosaur fossils.
CK-12 Foundation
Ck 12: Biology: Evolution of Modern Mammals
[Free Registration/Login may be required to access all resource tools.] Covers the evolution of modern mammals.
Enchanted Learning
Enchanted Learning: The Evolution of Mammals
A good and easy to read history of mammals. Relatively brief discussion of the evolutionary history.