University of California
Ucmp: Introduction to Chondrichthyes
Good introduction from Berkeley's department of paleontology, gives a brief history and the defining characteristics of the class of Chondrichthyes.
Other
Pelagic Shark Research Foundation: Glossary
A glossary for terms relating specifically to sharks, many of which are relevant to the entire chondrichthyes class.
Other
Starship Millenium Voyage: Sharks
Very good overall sharks page that concludes with two sections that include shark interactions with man and threats by man.
Other
Elasmo.com/guitarfish, Skates, and Rays
Brief overview of this lesser known group of Chondrichthyes. Links to the description of any of a variety of these fish.
Other
Pelagic Shark Research: Biology of Sharks
This page is an excellent resource with horn shark information. Numerous images of the horn shark are featured.
Other
Johns Hopkins: "Predators Promise"
A good article focused on the issue surrounding the possibility that sharks may hold some key to curing cancer.
John Wiley & Sons
Wiley: Earth Through Time: Life of the Paleozoic: Phylum Chordata
Learn about the evolution of life in the Paleozoic Era based on fossil evidence of the five classes of fishes. Read about the role these chordates played in the evolution of tetrapods.
National Geographic Kids
National Geographic Kids: Quiz Whiz: Sharks
See how much you know about sharks, and take this interactive, ten-question quiz about this marine animal.
CK-12 Foundation
Ck 12: Biology: Fish Classification
[Free Registration/Login may be required to access all resource tools.] Discusses how fish are classified.
CK-12 Foundation
Ck 12: Life Science: Cartilaginous Fish
[Free Registration/Login may be required to access all resource tools.] Cartilaginous fish range in size from the dwarf lanternshark, at 6.3 inches, to the 50-foot whale shark. These fish have a jaw and evolved from the jawless fish....
CK-12 Foundation
Ck 12: Biology: Fish Classification
[Free Registration/Login may be required to access all resource tools.] Discusses how fish are classified.
BBC
Bbc: Nature Wildfacts: Great White Shark
This resource provides detailed information about great white sharks.
University of Florida
Florida Museum of Natural History: Ichthyology: Fish Groups
Provides information on, and photographs of, the primitive fish classes. Discusses the Superclass Agnatha, the Class Chondrichthyes, and the Osteichthyes. Very interesting, with lots of pictures!
University of California
Ucmp: Introduction to Chondrostei
Chondrostei is a mostly forgotten group of cartilaginous fish which deserves at least one page, and here it is. Good information on a cartilagnous fish.
PBS
Pbs: Great White Shark
A concise look at the traits of the great white with a focus on it's position within the food chain.
Other
Gerontology Research Group: Sharks Do Get Cancer
An article that is interesting given the shark cartilage industry relevant to the controversy about sharks and cancer.
Other
Fiona's Shark Mania
Interesting site devoted to sharks. Not overly educational, though the links to shark news and the galleries of images are very nice. Lots of links to other sites.
Other
Elasmo: Lee Creek Fauna
A list of some representative Rays and Skates found in the fossil record of a particular area. A good look at the body form of a number of these animals.
Biology 4 kids
Biology4 Kids: Here Fishy Fishy
Identify the evolution of fish from 500 years ago to today. Find out the attributes of each of the four main types of fish.
Unique Australian Animals
Unique Australian Animals: Sawfish
Use this site to learn more about the Sawfish with this brief description and images.
Unique Australian Animals
Unique Australian Animals: Great White Sharks
At this site from Unique Australian Animals you can meet the one of the most feared animals of the ocean, the Great White Shark. Learn what Great Whites are really like by reading their description at this web page.
DLTK
Kid Zone: Sharks
The KidZone shows amazing images of sharks and presents all kinds of facts and activities in a format for grade school children.
PBS
Pbs Nature: Sharks
How many species of sharks are there in the world of water? Students will discover how and where sharks live, what they eat and how they socialize through the exploration of this resource.