Long-tailed sharks [1] ( Rhizoprionodon ) is a genus of carnivorous sharks from the family of gray sharks ( Carcharhinidae ) of the karhariform -shaped ( Carcharhiniformes ) order. They live in tropical and warm temperate waters of the Atlantic , Pacific and Indian oceans. Size ranges from 70 cm to 154 cm. These sharks have a slender body and an extended snout. The eyes are rather large. Sprinkler missing. There are grooves in the corners of the mouth. The nostrils are framed by small triangular folds of the skin. The ridge between the dorsal fins and the lateral carinae on the caudal stem are absent. There is a precaudal notch in the form of a crescent [2] . These sharks breed by live birth.
| Long nosed sharks |
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| Scientific classification |
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| No rank : | Bilateral symmetric |
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| International Scientific Name |
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Rhizoprionodon Whitley , 1929 |
| Synonyms |
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- Protozygaena Whitley, 1940
- Rhizoprion Ogilby, 1915
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The genus name comes from three Greek words: Greek. ρίζα is the root, πριόνι is a saw and ὀδούς is a tooth [3] .