Taxonomic Hierarchy
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| Kingdom | Animalia
– Animal, animaux, animals |
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| Subkingdom | Bilateria
– triploblasts |
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| Infrakingdom | Deuterostomia
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| Phylum | Chordata
– cordés, cordado, chordates |
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| Subphylum | Vertebrata
– vertebrado, vertébrés, vertebrates |
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| Infraphylum | Gnathostomata
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| Superclass | Tetrapoda
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| Class | Reptilia Laurenti, 1768
– répteis, reptiles, Reptiles |
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| Order | Squamata Oppel, 1811
– Amphisbaenians, Lizards, Snakes, amphisbčnes, lézards, serpents |
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| Suborder | Serpentes Linnaeus, 1758
– Snakes, cobra, serpente, serpents |
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| Infraorder | Alethinophidia Nopcsa, 1923
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| Family | Colubridae Oppel, 1811
– Colubrids, Typical Snakes |
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| Subfamily | Grayiinae Vidal, Delmas, David, Cruaud, Couloux and Hedges, 2007
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| Genus | Grayia Günther, 1858 |
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Direct Children: |
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| Species |
Grayia caesar (Günther, 1863)
– Caesar's African Water Snake | |
| Species |
Grayia ornata (Bocage, 1866)
– Ornate African Water Snake | |
| Species |
Grayia smithii (Leach, 1818)
– Smith's African Water Snake | |
| Species |
Grayia tholloni Mocquard, 1897
– Tholloni's African Water Snake | |
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