M. rex

M. rex may refer to:

• Megalopanax rex, a flowering plant species endemic to Cuba
• Meriones rex, the king jird, a rodent species found in Saudi Arabia and Yemen
• Mylomys rex, the Ethiopian mylomys, a rodent species found only in Ethiopia
• Myodes rex, the Hokkaido red-backed vole, a rodent species found only in Japan
• M. Rex, a comic book series that inspired Generator Rex.

See also

• Rex (disambiguation)