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                                                                    EXHIBIT 23.8

                           CONSENT OF AMH GROUP, LTD.

         We consent to the reference to our appraisal report for Devon Energy
Corporation as of the years ended December 31, 1998, 1999 and 2000, incorporated
herein by reference.

                                                           AMH GROUP, LTD.

                                                           /s/ ROBIN C. MANN
                                                               P. Geol.,
                                                               Partner


September 13, 2001