Phylogenetics Methodology
- Introduction to various phylogenetic statistical methodologies.
- http://research.amnh.org/~siddall/methods/

Understanding Cladistics
- Short introduction from the American Museum of Natural History.
- http://www.amnh.org/exhibitions/Fossil_Halls/cladistics.html

Willi Hennig Society
- Society of scientists studying cladistics.
- http://www.cladistics.org

Introduction to Cladistics
- Cladistics is a particular method of hypothesizing relationships among organisms based on the idea that members of a group share a common evolutionary history.
- http://www.ucmp.berkeley.edu/clad/clad1.html

What is Cladistics?
- The methods and terminology of phylogenetic systematics explained by the magazine Fossil News.
- http://www.fossilnews.com/1996/cladistics.html