| South American rattlesnake
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| South American rattlesnake (Crotalus durissus terrificus)
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| Scientific classification
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| Kingdom:
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Animalia
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| Phylum:
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Chordata
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| Class:
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Reptilia
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| Order:
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Squamata
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| Suborder:
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Serpentes
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| Family:
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Viperidae
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| Genus:
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Crotalus
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| Species:
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C. durissus
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| Binomial name
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Crotalus durissus
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| Synonyms
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- Crotalus Dryinas Linnaeus, 1758
- [Crotalus] Durissus – Linnaeus, 1758
- Caudisona orientalis – Laurenti, 1768
- Caudisona Gronovii – Laurenti, 1768
- Crotalus orientalis – Gmelin, 1788
- Crotalus strepitans var. dryinas – Daudin, 1803
- [Urocrotalon] durissus – Fitzinger, 1843
- Uropsophus durissus – Gray, 1849
- Crotalus durissus – Boulenger, 1896
- Crotalus pulvis – Ditmars, 1905
- [Crotalus] terrificus durissus – Amaral, 1929
- Crotalus terrificus durissus – Amaral, 1929
- [Crotalus] Gronovii – Klauber, 1936
- Crotalus durissus dryinus – Hoge, 1966
- Crotalus (Crotalus) durissus dryinus – J. Peters & Orejas-Miranda, 1970
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Crotalus durissus, known as the South American rattlesnake, tropical rattlesnake, and by other names, is a highly venomous pit viper species found in South America. It is the most widely distributed member of its genus. Currently, seven subspecies are recognized.