Difference between revisions of "Dolphin"
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| − | '''Dolphins''' are a number of kinds of | + | '''Dolphins''' (Greek: ''δελφίς, delphís'', "dolphin") are a number of kinds of Cetaceans related to the toothed whales of the suborder Odontoceti, and are found throughout the world's oceans and several major river systems. Although fish-like in appearance, dolphins are [[mammals]] which breath air and suckle their young on milk. |
| − | + | ==Description== | |
| + | Dolphins are generally cigar-shaped, with a pair of pectoral fins behind the head, a dorsal fin, and horizontal flukes ate the end of the tail. The head bears a mouth which terminates in a well-defined "beak" in most species and contains many cone-shaped teeth; by contrast porpoises - which are often confused with dolphins - do not have a beak-like snout and contain spade-shaped teeth. | ||
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Revision as of 07:20, April 18, 2010
| Dolphin | |
|---|---|
| |
| Pacific White-Sided Dolphin (Lagenorhynchus obliquidens) | |
| Scientific classification | |
| Kingdom Information | |
| Kingdom | Animalia |
| Subkingdom | Bilateria |
| Phylum Information | |
| Phylum | Chordata |
| Sub-phylum | Vertebrata |
| Infraphylum | Gnathostomata |
| Class Information | |
| Superclass | Tetrapoda |
| Class | Mammalia |
| Sub-class | Theriiformes |
| Infra-class | Holotheria |
| Order Information | |
| Superorder | Preptotheria |
| Order | Cetacea |
| Sub-order | Odontoceti |
| Family Information | |
| Families | Delphinidae Platanistidae Iniidae Lipotidae Pontoporiidae |
| Population statistics | |
Dolphins (Greek: δελφίς, delphís, "dolphin") are a number of kinds of Cetaceans related to the toothed whales of the suborder Odontoceti, and are found throughout the world's oceans and several major river systems. Although fish-like in appearance, dolphins are mammals which breath air and suckle their young on milk.
Description
Dolphins are generally cigar-shaped, with a pair of pectoral fins behind the head, a dorsal fin, and horizontal flukes ate the end of the tail. The head bears a mouth which terminates in a well-defined "beak" in most species and contains many cone-shaped teeth; by contrast porpoises - which are often confused with dolphins - do not have a beak-like snout and contain spade-shaped teeth.
References