Filed by Anadarko Petroleum Corporation Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Union Pacific Resources Group Inc. Commission File No. 1-13916 CREATING THE BEST E&P COMPANY IN THE WORLD TODAY [Three photographs of industry activities.] [ANADARKO PETROLEUM CORPORATION LOGO] [UNION PACIFIC RESOURCES LOGO] 1 CREATING THE BEST E&P COMPANY IN THE WORLD TODAY [ANADARKO PETROLEUM CORPORATION LOGO] [Photograph of Robert J. Allison, Jr.] ROBERT J. ALLISON, JR. Chairman and Chief Executive Officer 2 [ANADARKO PETROLEUM CORPORATION LOGO] SUMMARY TRANSACTION TERMS ................................................................................ o EXCHANGE RATIO: 0.4550 SHARES OF APC FOR EACH SHARE OF UPR ................................................................................ o ACCOUNTING STRUCTURE: PURCHASE ACCOUNTING/FULL COST ................................................................................ o TAX STRUCTURE: TAX FREE TO UPR SHAREHOLDERS ................................................................................ o CAPITALIZATION: DEBT CAP ~41% ................................................................................ o COMPANY NAME: ANADARKO PETROLEUM CORPORATION ................................................................................ o HEADQUARTERS: HOUSTON ................................................................................ o BOARD OF DIRECTORS: 5 UPR, 8 APC (PROPOSED) ................................................................................ o TARGET CLOSING DATE: JULY 2000 3 [ANADARKO PETROLEUM CORPORATION LOGO] THE ROAD TO HERE - ANADARKO ISSUES o EXPLORATION SUCCESS o FOCUS ON DEVELOPMENT o OPPORTUNITY RICH... CASH POOR... o TURNED THE CORNER 4 CREATING THE BEST E&P COMPANY IN THE WORLD TODAY [UNION PACIFIC RESOURCES LOGO] [Photograph of George Lindhal, III] GEORGE LINDAHL, III Chairman, President and Chief Executive Officer 5 [ANADARKO PETROLEUM CORPORATION LOGO] THE ROAD TO HERE - UPR ISSUES o LEADER IN DRILLING AND TECHNOLOGY o UNMATCHED LAND POSITION o STRONG CASH FLOW o EXPERIENCED AND DEDICATED PEOPLE o DEBT CONSTRAINING GROWTH POTENTIAL 6 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO o COMPLEMENTARY ASSET PORTFOLIOS AND STRENGTHS o GREAT CORE ASSETS o EXCELLENT GROWTH PORTFOLIO o FINANCIAL STRENGTH 7 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO - NORTH AMERICAN GAS ASSETS [Map of North America showing activity areas and land grant] 8 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO NORTH AMERICAN GAS PRODUCTION [Two photographs of industry activities] [Bar graph illustrating the following data: COMPANY GAS PRODUCTION, BCF/YEAR - ------- ------------------------- XON/MOB 1,479 BPA 1,082 SHL** 787 BR 699 CHV 669 New APC 634 TX* 550 ARC 540 UPR 464 VRI 401 P 380 UCL* 329 COCa 316 EOG 281 MRO 275 OXY 242 APA 205 DVN 199 KMG 191 APC 170] * Data for U.S. only, Canadian data unavailable ** Data for 1998, total North American data for 1999 unavailable 9 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO NORTH AMERICAN GAS RESERVES [Two photographs of industry activities] [Bar graph illustrating the following data: COMPANY PROVED GAS RESERVES, TCF - ------- ------------------------- XON/MOB 16.3 BPA* 12.0 BR 7.4 SHL** 7.0 New APC 5.8 ARC 5.2 TX* 4.2 P 3.9 CHV* 3.8 UPR 3.3 VRI 2.7 EOG 2.5 APC 2.5 COCa 2.2 MRO 2.1 DVN 1.9 OXY 1.8 UCL 1.7 APA 1.6 KMG 1.2] * Data for U.S. only, Canadian data unavailable ** Data for 1998, total North American data for 1999 unavailable 10 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO - PROFILE o PRODUCTION o RESERVES o FINANCIALS o PORTFOLIO 11 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO PRODUCTION BY REGION - 1999 [Pie charts illustrating the following information: GAS OIL EEBs o 70% U.S. Onshore o 50% U.S. Onshore o 62% U.S. Onshore o 16% Canada o 22% Latin America o 16% Canada o 14% Offshore o 15% Canada o 10% Offshore o 8% Algeria o 9% Latin America o 5% Offshore o 3% Algeria] 12 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO RESERVES BY REGION - 1999 [Pie charts illustrating the following information: GAS OIL EEBs o 69% U.S. Onshore o 38% U.S. Onshore o 54% U.S. Onshore o 17% Canada o 30% Algeria o 15% Algeria o 13% Offshore o 16% Latin America o 14% Canada o 1% Latin America o 10% Canada o 9% Offshore o 6% Offshore o 8% Latin America] 13 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO - PROFILE o PRODUCTION o RESERVES o FINANCIALS o PORTFOLIO 14 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO - FINANCIALS o CASH FLOW o EARNINGS o BALANCE SHEET o FINANCIAL STRENGTH 15 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO - PROFILE o PRODUCTION o RESERVES o FINANCIALS o PORTFOLIO 16 CREATING THE BEST E&P COMPANY IN THE WORLD TODAY [ANADARKO PETROLEUM CORPORATION LOGO] [Photograph of John N. Seitz] JOHN N. SEITZ President and Chief Operating Officer 17 CREATING THE BEST E&P COMPANY IN THE WORLD TODAY KEY FACTORS FOR SUCCESS o PEOPLE o SKILL SETS o ACCESS o CRITICAL MASS [Three pictures of industry activities.] 18 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO SEVEN CORE AREAS o NORTH AFRICA o LATIN AMERICA o CANADA & ALASKA o LAND GRANT - UTAH, WYOMING & COLORADO o MID CONTINENT o TEXAS & LOUISIANA o GULF OF MEXICO [Five pictures of industry activities and areas.] 19 [ANADARKO PETROLEUM CORPORATION LOGO] NORTH AFRICA [Map of North Africa with exploration and development areas highlighted. Detail of Algeria and Tunisia.] 20 [ANADARKO PETROLEUM CORPORATION LOGO] LATIN AMERICA [Map of Latin America highlighting core areas (APC Acerage and Other Projects) in South and Central America -- specifically Guatemala, Venezuela, Argentina, Brazil] 21 [ANADARKO PETROLEUM CORPORATION LOGO] CANADA & ALASKA [Map highlighting APC acerage and exploration prospects in Alaska and Canada] ALASKA 12 Leased Prospects: 3 MM BOE Potential Reserves (net unrisked) CANADA Resource Potential: 12 Billion BOE 58 Leased Prospects: 290 MM BOE Potential Reserves (net unrisked) 22 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO - NORTH AMERICAN GAS ASSETS [Map of North America showing activity areas and emphasizing land grant] 23 [ANADARKO PETROLEUM CORPORATION LOGO] LAND GRANT - UTAH, WYOMING & COLORADO [Map highlighting gas fields, oil fields, coal beds, active coalbed projects and land grant in Utah, Wyoming and Colorado.] EXPLORATION POTENTIAL - 24 Tcf BASIN CENTER 21 Tcf OVERTHRUST 1.4 Tcf COALBED METHANE 1.6 Tcf 24 [ANADARKO PETROLEUM CORPORATION LOGO] MID CONTINENT [Map illustrating extensive acreage position in Southwest Kansas. Detailing APC Acreage, 3D Seismic, Prospects, Chester Channel and Upper Morrow Fields] 25 [ANADARKO PETROLEUM CORPORATION LOGO] TEXAS & LOUISIANA [Map indicating holdings in Texas and Louisiana -- Ozona, Permian Basin, Giddings-Austin Chalk, Bossier, Carthage, LA Chalk, Vernon Field, Masters Creek, Etouffee and Turtle Soup (Currently Drilling)] CURRENT NET DAILY PRODUCTION: 717 MMcfe/d PUD DRILLING INVENTORY: 467 WELLS POSSIBLE + PROBABLE: DRILLING INVENTORY: 1300+ WELLS NET UNRISKED RESERVE ADDS: 300 MM BOE 26 [ANADARKO PETROLEUM CORPORATION LOGO] GULF OF MEXICO [Map of the Gulf of Mexico illustrating offshore drilling. Noting location of Conventional Blocks, Subsalt Blocks and Deepwater Blocks] 27 [ANADARKO PETROLEUM CORPORATION LOGO] THE NEW ANADARKO WORLDWIDE ACTIVITY [Map of the world highlighting Company's core areas and other activity areas.] 28 CREATING THE BEST E&P COMPANY IN THE WORLD TODAY [Three photographs of industry activities.] Except for historical information, all other information in this presentation consists of forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to risks and uncertainties which could cause actual results to differ materially from those projected, anticipated or implied. The most significant of these risks and uncertainties are described in Anadarko's and UPRC's SEC filings and reports and exhibits to those reports, and include (but are not limited to) the costs and difficulties related to the integration of acquired businesses, commodity pricing and demand, exploration and operating risks, development risks, and the costs and other effects of governmental regulation and legal and administrative proceedings. Anadarko and UPRC undertake no obligation to publicly update or revise any forward-looking statements. [ANADARKO PETROLEUM CORPORATION LOGO] 29 All stockholders should read the proxy statement/prospectus concerning the merger that will be filed with the SEC and mailed to stockholders. The proxy statement/prospectus will contain important information that stockholders should consider before making any decision regarding the merger. You will be able to obtain the proxy statement/prospectus, as well as other filings containing information about Anadarko Petroleum Corporation and Union Pacific Resources Group Inc., without charge, at the SEC's Internet site (http://www.sec.gov). Copies of the proxy statement/prospectus and the SEC filings that will be incorporated by reference in the proxy statement/prospectus can also be obtained, without charge, from the Corporate Secretary of the appropriate company. Information regarding the participants in the solicitation and a description of their direct or indirect interests, by security holdings or otherwise, is contained in Anadarko Petroleum Corporation's filing of its press release with the SEC under Rule 425 on April 3, 2000.