JD, cum laude, Harvard Law School, 1978
BA, highest honors, University of Oklahoma, 1974

Dan is a member of Phi Beta Kappa. 

• Colorado State Bar
• Oklahoma State Bar
• Texas State Bar

• Lifetime Achievement in Energy Litigation Award, Institute for Energy Law, 2016
• World's Leading Energy Lawyer, outstanding practitioner, Guide to the World's Leading Energy Lawyers, 2013
• Texas Top Rated Lawyer, LexisNexis Martindale-Hubbell, 2013 – 2014
• Recognized Lawyer, Energy and Natural Resources, Expert Guides, 2013 – 2020
• Chambers USA, Texas: Litigation (Energy & Natural Resources), Chambers & Partners, 2008 – 2020
• Chambers USA, Nationwide: Energy: Oil and Gas (Regulatory and Litigation), Chambers & Partners, 2010 – 2013
• Chambers USA, Nationwide: Oil and Gas Litigation, Chambers & Partners, 2021 – 2023
• Legal 500 US, Energy - Litigation: Oil and Gas, The Legal 500, 2008 – 2021, 2023
• The Best Lawyers in America, Antitrust Law, Best Lawyers, 2008 – 2024
• The Best Lawyers in America, Commercial Litigation, Best Lawyers, 2008 – 2024
• The Best Lawyers – Texas, Antitrust Law, Best Lawyers, 2022 - 2023
• The Best Lawyers – Texas, Commercial Litigation, Best Lawyers, 2022 - 2023
• Lawyer of the Year, Antitrust law, Best Lawyers, 2020
• Texas Super Lawyer, Business Litigation, Thomson Reuters, 2003 – 2022
• BTI Client Service All-Star Team, BTI Consulting Group, 2006, 2009

Dan's published works include:

• Co-author, "Texas Supreme Court Holds That Oil and Gas Royalties Are Owed on More Than Gross Proceeds Under Unique "Proceeds Plus" Lease Provision," Institute for Energy Law – Oil & Gas E-Report, June 2023
• Co-author, "Texas Cases Reject Claims that Royalties Are Owed on Off-Lease Use of Gas Where Leases Contain a 'Free-Use' Lease Fuel Clause and an 'at the Well' Royalty Clause," Institute for Energy Law – Oil & Gas E-Report, Issue 1, March 2022
• Co-author, A Practitioner's Guide to Class Actions, ABA (2d ed. 2021) (Co-author of Chapter 16, "Daubert Challenges in Class Certification")
• Co-author, "BlueStone v. Randle: Supreme Court of Texas Holds that Producer Could Not Deduct Post-Production Costs when 'Gross Value Received' Royalty Clause Controlled, and Must Pay Royalty on Off-Lease Use of Gas Not Covered by 'Free Use' Lease Fuel Clause," Institute for Energy Law – Oil & Gas E-Report, Issue 2, June 2021
• Co-author, "Texas Supreme Court allows producers paying royalties to deduct post-production costs," Norton Rose Fulbright - Legal update, March, 2019
• Co-author, "Oklahoma Quakes Trigger Legal Concerns For Energy Cos.," Law360, February 4, 2016
• Co-author, "Kansas Supreme Court Limits Marketable Product Doctrine in Royalty Cases," The Energy Law Advisor, November 2015
• Co-author, "USA Chapter," The International Comparative Legal Guide to Class & Group Actions 2016 - 2022
• Co-author, "Supreme Court rejects higher removal standard for class action defendants," Norton Rose Fulbright - Legal update, December 17, 2014 
• Co-author, "Supreme Court Further Refines Proof Standards For Class Certification And Ups The Ante For Antitrust Plaintiffs," Fulbright Alert, March 28, 2013
• Co-author, "Supreme Court Tames Class Action Frankenstein's Monster," Law 360, March 22, 2013
• Co-author, "Supreme Court Prevents Class Plaintiffs From Stipulating Around Federal CAFA Jurisdiction," Fulbright Briefing, March 21, 2013
• Co-author, "Supreme Court Deals a Heavy Blow to Colossal Discrimination Class Actions," Fulbright & Jaworski L.L.P. Alert, June 22, 2011
• Contributor, A Practitioner's Guide to Class Actions, American Bar Association, 2017
• Co-author, "Fifth Circuit Decision Supports Immunity for Peer Review," Fulbright & Jaworski L.L.P. Briefing, July 13, 2009
• Co-author, "SEC Issues Final Rule on Modernization of Oil and Gas Reporting," The Energy Law Advisor, July 2009
• Co-author, "Texas Supreme Court Decision in Coastal v. Garza:  Rule of Capture Bars Recovery of Drainage Damages for Subsurface Trespass from Hydraulic Fracturing," Fulbright & Jaworski L.L.P. Client Alert, September 2008
• Co-author, "Federal Courts Experience Surge in Class Action Activity," Fulbright & Jaworski L.L.P. Briefing, April 2008
• Co-author, "Trends in Energy Litigation 2007," April 2007 (winner of Burton Award for Best Law Firm Publication)
• "Qui Tam Cases in the Energy Industry," 33^rd Annual Ernest E. Smith Oil, Gas & Mineral Law Institute, March 2007
• "The Class Action Fairness Act of 2005 Significantly Expands Federal Jurisdiction Over Class Actions," Fulbright & Jaworski L.L.P. Client Alert, February 2005
• "Current Trends in Energy Litigation," 27 State Bar of Texas Oil, Gas & Energy Resources Law Section Report, 2002
• "Royalty Valuation and Payment Issues: Where Are We and Where Are We Headed?" 48 Rocky Mountain Mineral Law Institute, 2002
• "Developments in Oil and Gas Class Action Litigation," Fifty-Second Annual Institute on Oil and Gas Law and Taxation, 2001
• "False Claims Act Being Misused to Impose Regulatory Agendas," 13 Legal Backgrounder No. 24, Washington Legal Foundation, July 10, 1998
• "Class Actions in the Oil and Gas Industry," Forty-Eighth Annual Institute on Oil and Gas Law and Taxation, 1997
• "Trademarks and Competition: The Recent History," 59 Law & Contemp. Probs. 13, Spring 1996

• Texas Board of Legal Specialization – certified in Civil Trial Law (1988)
• Institute for Energy Law - Vice Chair, Executive Committee, Advisory Board member, and former Chair of Oil and Gas Committee
• American Health Lawyers Association
• National Association of Railroad Trial Counsel
• American Inns of Court
• American Bar Foundation, Fellow
• American Bar Association
  • Litigation, Health Law, and Antitrust Sections
• State Bar of Texas
  •  Litigation, Health Law, Antitrust and Oil, Gas and Mineral Law Sections
• Texas Bar Foundation, Life Fellow
• College of the State Bar of Texas, Fellow
• Houston Ballet, Board of Trustees, Vice President, Executive Committee (2008 - 2016, 2019-2023)