Discusses many aspects of information pertainingto organism classification. Provides links to other areas in biology as well.

Explore the classification of living things in this online, college-level textbook. Learn about taxonomy and its history through diagrams and descriptive information.

This site from McGraw-Hill Higher Education provides links to key terms, lecture notes, and readings on classification, as well as questions from Raven and Johnson's textbook reading on classification.

Discover the diversity of plants.

Quiz on some aspects of biological classification. Provides feedback when answers to the quiz are submitted.

This page discusses how the cladistic level of classification includes information from molecular biology to establish evolutionary relationships. The page discusses how this information is used to do this.

Learn the system that scientists use to classify living things.

Having trouble studying for tests or comprehending new material? This in-depth guide provides a multitude of ways to help you acquire reading and critical thinking skills necessary for understanding new material.

This resource contains general information about the class Mammalia and their unifying characteristics.

This is an advanced level review of cladistic theory and methodology. Some sections are very dense but there are useful sections for teachers and students seeking a better understanding of the topic.

Use the scientific reasoning and critical thinking to take an in-depth look at the basics of biology.