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Scientific Name
Crotalus oreganus
Scientific Name w/ Auth.
Crotalus oreganus Holbrook, 1840
Park
Craters of the Moon National Monument and Preserve (CRMO)
Sensitive
No
Park Accepted
Accepted
Record Status
Approved
Park Preferred Common Names
western rattlesnake, northern Pacific rattlesnake
Park Synonyms
Crotalus viridis
Taxonomic Hierarchy
| Kingdom | Animalia |
| Subkingdom | Bilateria |
| Infrakingdom | Deuterostomia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Infraphylum | Gnathostomata |
| Superclass | Tetrapoda |
| Class | Reptilia |
| Order | Squamata |
| Suborder | Serpentes |
| Infraorder | Alethinophidia |
| Family | Viperidae |
| Subfamily | Crotalinae |
| Genus | Crotalus |
| Species | Crotalus oreganus |
Occurrence
Present
Occurrence Notes
Data Source: Lee, J.R. and Peterson, C.R., 2003
Nativeness
Native
Nativeness Notes
Data Source: Lee, J.R. and Peterson, C.R., 2003
Abundance
Common
Abundance Notes
Data Source: Lee, J.R. and Peterson, C.R., 2003
Management Tags
-
Exploitation Concern
Rattlesnakes have the potential for exploitation through collection for their hides or through persecution. Frequent take, especially in the Preserve.
Seasonality Tags
- Breeder
- Resident
Threatened Endangered Status
State Species of Concern statuses
Ozone Sensitive Status
NatureServe GRank
NatureServe SRank
Observations
35
References
Vouchers
1
External Links
Evidence counts shown include evidence for related synonyms.
Created By
BLA - I & M Office.
Created Date
7/17/2000 12:00:00 AM
Last Modified By
tstefanic@nps.gov
Last Modified Date
8/19/2026 5:14:50 PM
Notes
Davis et al. 2016 split Crotalus viridis and oreganus, they are parapatric (organisms whose ranges do not significantly overlap but are immediately adjacent to each other; they do not occur together except in a narrow contact zone). See map in Davis et al. 2016 (Fig. 2), Farleigh et al. 2026: Fig. 2. This taxonomic revision renders all previous C. viridis records as invalid and replaces them with C. oreganus.
Other Parks
Bryce Canyon National Park (BRCA)
Golden Spike National Historical Park (GOSP)
Lava Beds National Monument (LABE)
Nez Perce National Historical Park (NEPE)
Parashant National Monument (PARA)
Pinnacles National Park (PINN)
Pipe Spring National Monument (PISP)
Point Reyes National Seashore (PORE)
Redwood National Park (REDW)
Saguaro National Park (SAGU)
Sequoia and Kings Canyon National Parks (SEKI)
Timpanogos Cave National Monument (TICA)
Tonto National Monument (TONT)
Zion National Park (ZION)
Golden Spike National Historical Park (GOSP)
Lava Beds National Monument (LABE)
Nez Perce National Historical Park (NEPE)
Parashant National Monument (PARA)
Pinnacles National Park (PINN)
Pipe Spring National Monument (PISP)
Point Reyes National Seashore (PORE)
Redwood National Park (REDW)
Saguaro National Park (SAGU)
Sequoia and Kings Canyon National Parks (SEKI)
Timpanogos Cave National Monument (TICA)
Tonto National Monument (TONT)
Zion National Park (ZION)
