What was the historical scientific classification under which the Western Rat Snake was once placed?

Answer

Elaphe obsoleta

The taxonomy of the Western Rat Snake has undergone revisions over time, reflecting ongoing scientific refinement in understanding snake lineage. Specifically, this non-venomous colubrid was previously classified under the scientific name *Elaphe obsoleta* before its current placement in the *Pantherophis* genus. Recognizing this historical classification is important because older natural history records or regional literature might still utilize this outdated nomenclature when describing the species' behavior, distribution, or physical characteristics.

What was the historical scientific classification under which the Western Rat Snake was once placed?
animalreptilesnakerat snake