CK-12 Foundation
Ck 12: Biology: Phylogenetic Classification
[Free Registration/Login may be required to access all resource tools.] Introduces phylogenetic classification and compares it with the Linnaean classification.
Enchanted Learning
Enchanted Learning: Zoom Dinosaurs
Zoom Dinosaurs is a comprehensive on-line hypertext book about dinosaurs. It is designed for students of all ages and levels of comprehension. It has an easy-to-use structure that allows readers to start at a basic level on each topic,...
BiologyWise
Biology Wise: Synapomorphy
Explains what synapomorphy is by using examples to demonstrate the concept, which plays an important role in the system of cladistics.
CK-12 Foundation
Ck 12: Biology: Classifying Organisms Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on classifying organisms.
Sophia Learning
Sophia: Fossils: Lesson 6
This lesson will explain how fossils can be used to determine evolutionary relationships. It is 6 of 6 in the series titled "Fossils."