[Free Registration/Login may be required to access all resource tools.] Did you know that fish, amphibians, reptiles, birds, and mammals are all related? They are all chordates. Chordates are a group of animals that includes vertebrates,...

This site identifies different characteristics and information related to Bony Fish. Find out some fun facts about these friendly fish when you explore this site.

The highest category of taxonomic classification is the kingdom. This website from Palomar College presents the five kingdoms in an easy-to-read chart and discusses the Animalia and Plantae kingdoms in depth. After reading through the...

[Free Registration/Login may be required to access all resource tools.] Overview of the characteristics and classification of chordates.

This site from the Wikipedia Encyclopedia provides a basic description of the characteristics of the hagfish. Also includes a chart that contains scientific classification information. Links are provided throughout for additional...

[Free Registration/Login may be required to access all resource tools.] Animals are also often identified as being either invertebrates or vertebrates. These are terms based on the skeletons of the animals. Vertebrates have a backbone...

Wikipedia, an open-source encyclopedia, provides great information on mammals. Content includes a look at mammal characteristics, origins, classification, and more.

Learn about the animal kingdom including an in-depth look at body characteristics, reproduction, types of cells, ways they obtain food, and evolutionary relationships. Many illustrations and nine interactive activities are included.

Explore the characteristics and behaviors of amphibians.

Learn about the characteristics, classification, and phylogeny that make the Phylum Chordata, a distinct animal classification group. See examples and photos of different species of chordates.

Explore the behaviors, characteristics, and diversity of chordates.

Learn how all living things are classified.

In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means 'Origin of the Sky'. Located on the east coast of the Yucatan peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as...