Part IV

Item 15.

Exhibits and Financial Statement Schedules

(a) The following documents are filed as a part of this report:
1. Financial Statements:

Consolidated Balance Sheets at December 31, 2007 and 2006

Consolidated Income Statements for the years ended
December 31, 2007, 2006 and 2005

Consolidated Statements of Cash Flows for the years ended
December 31, 2007, 2006 and 2005

Consolidated Statements of Stockholders’ Equity for the years ended
December 31, 2007, 2006 and 2005

Notes to Consolidated Financial Statements
Management’s Report on Internal Control over Financial Reporting

Reports of Independent Registered Public Accounting Firm

2. Financial Statement Schedules:

All financial statement schedules have been omitted because they are not applicable or the required information is presented in the financial statements or the notes to consolidated financial statements.

(b) Exhibits

See Index to Exhibits for a description of the exhibits filed as a part of this report. Documents filed prior to June 1, 2001, were filed with the Securities and Exchange Commission under our prior name, Cross Timbers Oil Company.