Chondrichthyes - Wikipedia, the free encyclopedia
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Chondrichthyes (pronounced /kɑːnˈdrɪk.θiːˌiːz/ ) or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, two-chambered hearts, and skeletons made of cartilage rather th...
en.wikipedia.org/wiki/Chondrichthyes
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Sharks, skates, rays, and even stranger fish make up the Chondrichthyes, or "cartilaginous fish." First appearing on Earth almost 450 million years ago, cartilaginous fish today include both fearsome predators and harmless mollusc-eaters (harmless, that is, unless you are a mollusc).
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www.ucmp.berkeley.edu/vertebrates/basalfish/chondrintro...
www.ucmp.berkeley.edu/vertebrates/basalfish/chondrintro.html
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The class Chondrichthyes is also known as Elasmobranchia. It includes the sharks, skates, and rays. They are termed "cartilliganeous fish."; ... Sharks; Sharks do not have swim bladders, and if they were to stop moving they would probably sink to the bottom of the ocean; therefore, they are usually constantly in motion.
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www.cyhaus.com/marine/sharks.htm
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Superclass Gnathostomata (jawed vertebrates) ... Class Chondrichthyes (rays, sharks, and relatives) ... Home Kingdom Animalia Phylum Chordata Subphylum Vertebrata Class Chondrichthyes...
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animaldiversity.ummz.umich.edu/site/accounts/informatio...
animaldiversity.ummz.umich.edu/site/accounts/information/Chondrichthyes.html
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ray-finned fishes. Actinopterygii Petromyzontiformes rays, sharks, and relatives. Chondrichthyes, spotted eagle ray. Aetobatus narinari, thresher shark ...
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animaldiversity.ummz.umich.edu/site/accounts/pictures/C...
animaldiversity.ummz.umich.edu/site/accounts/pictures/Chondrichthyes.html
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More about Chondrichthyes; (sharks and their kin) ... Sharks, skates, rays and holocephalans belong to a group of fishes called the Chondrichthyes (=cartilaginous fishes). The most distinctive characteristic of chondrichthyans is their skeleton.
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www.devoniantimes.org/who/pages/sharks.html
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These are fishlike vertebrates with well-developed fins and teeth, and with 2 pairs of fins, one of them supported by the pectoral girdle, the other by the pelvic girdle. Their most distinctive character, ... Fertilization is internal in all of them, and is effected by a pair of rodlike copulatory organs, each of which...
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www.gma.org/fogm/chondrichthyes.htm
www.gma.org/fogm/chondrichthyes.htm
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Sharks, Rays, Skates - Class Chondrichthyes ... This class contains the cartilaginous fishes, those that have a skeleton of cartilage rather than bone. This includes all sharks, skates and rays. They also have five to seven gill slits on each side of the body.
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www.woodbridge.tased.edu.au/mdc/Species%20Register/clas...
www.woodbridge.tased.edu.au/mdc/Species%20Register/class_chondrichthyes.htm
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Class Chondrichthyes; ... Chondrichthyes. (cartilaginous fishes: sharks, rays, chimaeras). Species included in the Animal ... Description: Taxonomic information for cartilaginous fishes: sharks, rays, chimaeras.
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virtualology.com/classagnatha/chondrichthyes.org/
virtualology.com/classagnatha/chondrichthyes.org/
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