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.
University of California
University of California: The Age of Mammals
This online chapter of a book studying biodiversity and conservation explores the evolution of mammals, from the extinction of the dinosaurs to the evolution of humans.
CK-12 Foundation
Ck 12: Biology: Mammal Ancestors
[Free Registration/Login may be required to access all resource tools.] Discusses therapsid ancestors of mammals.
American Museum of Natural History
American Museum of Natural History: Exhibition: Extreme Mammals
Learn about the body structure, habitat, reproduction, movement, and evolution of extreme mammals, both extinct and living, through interative animation and short videos.
PBS
Pbs Learning Media: Fossils in the Gobi
Biologist Mike Novacek discusses his discovery of mammal fossils in the Gobi Desert and tells us what we can learn from them. From an episode about extinction broadcast on the PBS series "Evolution."
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.
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.