GRAN TIERRA ENERGY AND SOLANA RESOURCES SIGN AGREEMENT TO COMBINE TO CREATE A PREMIER INTERNATIONAL OIL AND GAS EXPLORATION AND PRODUCTION COMPANY

CALGARY, Alberta, July 29, 2008, Gran Tierra Energy Inc. (AMEX:GTE; TSX: GTE) and Solana Resources Limited (TSX-V: SOR; AIM: SORL) announced today that they have entered into a definitive agreement providing for the business combination of Gran Tierra Energy Inc. and Solana Resources Limited.  The transaction is expected to create an exploration and production company [...]