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Elasmobranch is a class of fishes with bones made of cartilage. It includes sharks, skates and rays. Cartilage is the material that is in your nose and ears. Their only real bones are teeth and jaws.
They are a very old, successful class of fishes. There were sharks before there were dinosaurs. Because they lack bones, there are very few fossils of older sharks.
Sharks are endangered now because their cartilaginous fins are prized for soup in some cultures.
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Want is the scientific name for shark?
Elasmobranch
What is a rhincodo n?
A Rhincodon is a genus of elasmobranch fishes that contains only the Whale Shark - according to online dictionaries...
What is the different between elasmobranchii and holocephali?
Teleost fish The endoskeleton made of bone. Gills covered by operculam. Homocercal tail. Oviparous. ELASMOBRANCH endoskeieton made of cartilage. Gill slits present,not covered. Viviparous. Heterocercal tail.
What has the author Marjorie Jane Johns written?
Marjorie Jane Johns has written: 'Taxonomy and biostratigraphy of Middle and Late Triassic elasmobranch ichthyoliths from northeastern British Columbia' -- subject(s): Animals, Fossil, Fossil Animals, Ichthyoliths, Paleontology
Did dinosaurs have a cloaca or an anus?
A cloaca is a common chamber and outlet into which the intestinal, urinary, and genital tracts open. It is present in amphibians, reptiles (therefore dinosaurs), birds, elasmobranch fishes (such as sharks), and monotremes. Plancental mamals and most bony fishes have an anus.
What is the definition of shark?
Any one of numerous species of elasmobranch fishes of the order Plagiostomi, found in all seas., A rapacious, artful person; a sharper., Trickery; fraud; petty rapine; as, to live upon the shark., To pick or gather indiscriminately or covertly., To play the petty thief; to practice fraud or trickery; to swindle., To live by shifts and stratagems.
What is the connotative meaning of shark?
Any one of numerous species of elasmobranch fishes of the order Plagiostomi, found in all seas., A rapacious, artful person; a sharper., Trickery; fraud; petty rapine; as, to live upon the shark., To pick or gather indiscriminately or covertly., To play the petty thief; to practice fraud or trickery; to swindle., To live by shifts and stratagems.
Denotation meaning of shark?
Any one of numerous species of elasmobranch fishes of the order Plagiostomi, found in all seas., A rapacious, artful person; a sharper., Trickery; fraud; petty rapine; as, to live upon the shark., To pick or gather indiscriminately or covertly., To play the petty thief; to practice fraud or trickery; to swindle., To live by shifts and stratagems.
All animals with names ending in e?
antelope, ape, crocodile, doe, eagle, gazelle, giraffe, mare, moose, mouse, mule, snake, turtle, whale, vulture
What is the meaning of skate?
A metallic runner with a frame shaped to fit the sole of a shoe, -- made to be fastened under the foot, and used for moving rapidly on ice., To move on skates., Any one of numerous species of large, flat elasmobranch fishes of the genus Raia, having a long, slender tail, terminated by a small caudal fin. The pectoral fins, which are large and broad and united to the sides of the body and head, give a somewhat rhombic form to these fishes. The skin is more or less spinose.
Are there any mammal sharks?
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha and are the sister group to the rays. However, the term "shark" has also been used for extinct members of the subclass Elasmobranchii outside the Selachimorpha, such as Cladoselache and Xenacanthus, as well as other Chondrichthyes such as the holocephalid eugenedontidans.
A fish that has no bones?
Sharks belong to the Chondrichthyes class which means that they lack what is called "true bone". Their "skeleton" is made up of cartilage, which is the same as the human ear, so they do not have an actual skeleton.
