This outline details the six steps necessary for completing a cladistic analysis. The final step is to build the cladogram, following the rules that: all taxa go on the endpoints of the cladogram (never at the nodes),...

This module provides a brief introduction to the philosophy, methodology, and implications of cladistic analysis. Cladistics is a particular method of hypothesizing relationships among organisms. Like other methods, it...

An international endeavor, the Species 2000 project aims to enumerate "all known species of plants, animals, fungi and microbes on Earth as the baseline dataset for studies of global biodiversity." Though an ambitious...

This Tree of Life web page features scientific information about Tardigrades, also known as water bears. The page includes the following Tardigrade resources: a diagram showing the external features of a Tardigrade,...