P. rex may refer to:
- Papilio rex, the regal swallowtail, a butterfly species found in Africa
- Pedicularis rex, a plant related to lousewort
- Percina rex, the Roanoke logperch, a small freshwater fish species found in the Roanoke and Chowan drainages
- Pseudoeurycea rex, a salamander species found mostly in Guatemala and Mexico
See also
Topics referred to by the same termThis disambiguation page lists articles associated with the same abbreviated species scientific name.
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