Recherche rapide
| Animal | Animalia |
| Bilateria | |
| Deutérostomiens | Deuterostomia |
| Chordés | Chordata |
| Vertébrés | Vertebrata |
| Reptiles | Reptilia |
| Squamates | Squamata |
| Serpentes | |
| Alethinophidia | |
| Viperidae | |
| Crotalinae | |
| Crotalus |
| Animal | Animalia |
| Bilateria | |
| Deutérostomiens | Deuterostomia |
| Chordés | Chordata |
| Vertébrés | Vertebrata |
| Reptiles | Reptilia |
| Squamates | Squamata |
| Serpentes | |
| Alethinophidia | |
| Viperidae | |
| Crotalinae | |
| Crotalus |