| Fossil Wildman Trust Unit No. 4 #9HHZ42-289-32158 | Fossil Operating, Inc. only | Leon, TX | Not on schedule | 7,100 | Mar 13, 2015 | — | — |
| Fossil Williams #242-289-31912 | Fossil Operating Inc. only | Leon, TXHilltop Resort (Woodbine) | PluggedOil | 8,800 | Sep 13, 2011 | — | — |
| W.A. Howard #242-349-34919 | Fossil Operating, Inc. only | Navarro, TX | Not on schedule | 9,000 | Apr 27, 2010 | — | — |
| W.A. Howard #142-349-34912 | Fossil Operating Inc. only | Navarro, TXWildcat | PluggedOil | 8,000 | Feb 11, 2010 | — | — |
| Fossil-Lone Oak Ranch #5HHZ42-289-31729 | Fossil Operating Inc. only | Leon, TXWildcat | PluggedGas | 15,000 | Mar 4, 2008 | — | — |
| Fossil Fridkin Kaufman Ltd. #242-289-31455 | Fossil Operating Inc. only | Leon, TXHilltop Resort (Bossier) | PluggedGas | 20,000 | Feb 4, 2005 | — | — |
| Fossil Operating Fed Com #00230-005-00441 | Fossil Operating Inc. only | Chaves, NMDry & Abandoned | Dry holeGas | 10,242 | Oct 7, 2003 | 0 | 0 |
| Fossil Operating Federal #00130-005-63526 | Fossil Operating Inc. only | Chaves, NMKing Camp; Devonian, North | CanceledOil | 9,999 | Jan 6, 2003 | 0 | 0 |
| Carver #142-213-30623 | Fossil Operating, Inc. only | Henderson, TX | Plugged | 7,600 | Nov 22, 2002 | — | — |
| Bozzell #342-367-33384 | Fossil Operating, Inc. only | Parker, TX | Not on schedule | 3,050 | Aug 15, 2001 | — | — |
| McCallum Ranch #342-059-36556 | Fossil Operating, Inc. only | Callahan, TX | Not on schedule | 3,300 | Dec 15, 2000 | — | — |
| Lilley #442-059-36483 | Fossil Operating Inc. only | Callahan, TXNicholas (Duffer) | PluggedGas | 4,100 | Jul 5, 2000 | — | — |
| Hicks #142-133-37767 | Fossil Operating Inc. only | Eastland, TXTauren (Caddo Upper) | PluggedGas | 4,100 | Mar 9, 2000 | — | — |
| McCallum Ranch #142-059-36512 | Fossil Operating Inc. only | Callahan, TXWildcat | PluggedGas | 4,100 | Dec 2, 1999 | — | — |
| Glenda Sue #142-133-37789 | Fossil Operating Inc. only | Eastland, TXTauren (Caddo Upper) | PluggedGas | 4,000 | Oct 28, 1999 | — | — |
| Pettiet #142-133-37788 | Fossil Operating Inc. only | Eastland, TXWildcat | PluggedGas | 4,000 | Sep 24, 1999 | — | — |
| Arrant #142-441-33911 | Fossil Operating, Inc. only | Taylor, TX | Not on schedule | 5,000 | May 28, 1999 | — | — |
| Lilley #542-133-37765 | Fossil Operating Inc. only | Eastland, TXWildcat | PluggedGas | 4,100 | Feb 17, 1999 | — | — |
| Lilley #142-059-00230 | Fossil Operating Inc. only | Callahan, TXTauren (Caddo Upper) | PluggedGas | 3,900 | Feb 26, 1998 | — | — |
| Bergman #142-367-33334 | Fossil Operating Inc. only | Parker, TXColeen (Strawn) | PluggedGas | 2,990 | Jan 20, 1998 | — | — |
| Whitehouse #142-367-33322 | Fossil Operating Inc. only | Parker, TXColeen (Strawn) | PluggedGas | 3,400 | Apr 3, 1997 | — | — |
| Wiese #142-367-33311 | Fossil Operating Inc. only | Parker, TXColeen (Strawn) | PluggedGas | 3,400 | Oct 24, 1996 | — | — |
| Fossil Fridkin-Kaufman #1HHZ42-289-31225 | Fossil Operating Inc. only | Leon, TXHilltop Resort (Austin Chalk) | PluggedOil | 6,500 | Aug 18, 1995 | — | — |
| Johnson #1A42-367-33260 | Fossil Operating, Inc. only | Parker, TX | Not on schedule | 3,000 | May 10, 1995 | — | — |
| Fossil Hillegeist #1HZ42-289-31219 | Fossil Operating Inc. only | Leon, TXHilltop Resort (Austin Chalk) | PluggedOil | 6,500 | Feb 1, 1995 | — | — |
| Fossil Dacus #1HZ42-289-31191 | Fossil Operating Inc. only | Leon, TXHilltop Resort (Austin Chalk) | PluggedOil | 6,500 | Aug 17, 1993 | — | — |
| Fossil Crowe-Faison #1HZ42-289-31184 | Fossil Operating Inc. only | Leon, TXHilltop Resort (Austin Chalk) | PluggedOil | 6,500 | Apr 26, 1993 | — | — |
| Fossil Lanier #1HZ42-289-31182 | Fossil Operating Inc. only | Leon, TXHilltop Resort (Austin Chalk) | PluggedOil | 6,500 | Mar 25, 1993 | — | — |
| Fossil Wildman-Hilltop #1HZ42-289-31173 | Fossil Operating Inc. only | Leon, TXHilltop Resort (Austin Chalk) | PluggedOil | 6,500 | Nov 13, 1992 | — | — |
| Simpson #142-367-32272 | Fossil Operating Inc. only | Parker, TXH. & R. (Bend Congl) | PluggedGas | 5,205 | Apr 8, 1982 | — | — |
| Mpds Corp. #142-363-30769 | Fossil Operating Inc. only | Palo Pinto, TXMoe (3800) | PluggedGas | — | — | — | — |