Chondrichthyes
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| Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone. The class is divided into two subclasses: Elasmobranchii (sharks, rays and skates) and Holocephali (chimaeras, sometimes called ghost sharks, which are sometimes separated into their own class).
For more information visit the Wikipedia Entry Get back to Fishes | ||
 Angel sharks
|
Bramble sharks & allies | Bullhead sharks |
| Carpet sharks | Catsharks | Chimaera & allies |
| †Cladoselache | Frilled & cow sharks |  Hammerhead sharks
|
 Houndsharks
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†Hybodus | Mackerel sharks |
| †Orthacanthus | Rays & skates |  Requiem sharks
|
| Sawsharks | †Stethacanthus | †Xenacanthus |
