To what location does the specific name *oreganus* refer as its type locality?
Answer
Banks of Oregon or Columbia River
The scientific designation *oreganus* carries a historical reference embedded within its nomenclature, pointing directly back to the original location where the type specimen was identified. This reference is specified as being near the banks of either the Oregon or the Columbia River. While the modern distribution of the Northern Pacific Rattlesnake is far more extensive, covering many states and parts of Canada, this specific geographical context defines the etymological root of its subspecies classification.
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