Exhibit 10.7.3 PURCHASE AND EXPLORATION AGREEMENT THIS PURCHASE AND EXPLORATION AGREEMENT (this "Agreement"), dated as of March 10, 2003, is between AMERICAN NATURAL ENERGY CORPORATION, an Oklahoma corporation ("Seller"), and TRANSATLANTIC PETROLEUM...Purchase and Exploration Agreement • March 31st, 2004 • American Natural Energy Corp • Oil & gas field exploration services • Texas
EXHIBIT 10.7.3 PURCHASE AND EXPLORATION AGREEMENT THIS PURCHASE AND EXPLORATION AGREEMENT (this "Agreement"), dated as of March 10, 2003, is between AMERICAN NATURAL ENERGY CORPORATION, an Oklahoma corporation ("Seller"), and TRANSATLANTIC PETROLEUM...Purchase and Exploration Agreement • July 29th, 2003 • American Natural Energy Corp • Oil & gas field exploration services • Texas