The Age of Mammals
- An overview of Cenozoic mammalian evolution.
- http://darwin.bio.uci.edu/~sustain/bio65/lec02/b65lec02.htm

The Cenozoic Era
- An overview of the era from the UC Berkeley Museum of Paleontology.
- http://www.ucmp.berkeley.edu/cenozoic/cenozoic.html

Pliocene
- A short background.
- http://www.esd.ornl.gov/projects/qen/pliocene.html

Quaternary Entomology Laboratory
- A lab specializing in the analysis and application of Pleistocene and Holocene insect remains for paleoenvironmental analyses. Located in the Department of Geosciences, North Dakota State University
- http://www.ndsu.nodak.edu/instruct/schwert/qel/qel.htm

Institute of Arctic and Alpine Research
- Quaternary paleoecology site from the University of Colorado, Boulder's Scott Elias
- http://culter.colorado.edu:1030/~saelias/elias.html