This list is a composite of lists compiled by Kelly Milner-Halls and the Black Hills Institute of Geological Research.
| SPECIMEN | YEAR | LOCATION | AMT. | OWNER |
|---|---|---|---|---|
| 1850's | Montana | trace (teeth & jaw) | unknown | |
| BM-R7994 | 1900 | Wyoming | 13% | British Museum, London |
| CM-9380 | 1902 | Montana | 50% | Carnegie Museum, Pittsburgh, PA |
| AMNH-5027 | 1906 | Montana | 45% | Amer. Museum of Nat. Hist., New York, NY |
| TMP.81.12.1 | 1946 | Alberta | 20% | Royal Tyrrell Museum, Drumheller, ALB |
| LACM-23844 | 1966 | Montana | 25% | L.A. County Museum, Los Angeles, CA |
| LACM-23845 | 1966 | Montana | 12% | L.A. County Museum, Los Angeles, CA |
| MOR-008 | 1967 | Montana | 40% of skull | Museum of the Rockies, Bozeman, MT |
| SDSM-12047 | 1980 | S. Dakota | 25% | S.D. Sch. of Mines& Tech., Rapid City, SD |
| TMP.81.6.1 | 1981 | Alberta | 25% | Royal Tyrrell Museum, Drumheller, ALB |
| MOR-009 | 1981 | Montana | 15% | Museum of the Rockies, Bozeman, MT |
| 1983 | New Mexico | unknown | New Mexico Museum of NH | |
| MOR-555 (Wankel) | 1988 | Montana | 80% | Museum of the Rockies, Bozeman, MT |
| BHI-2033 (SUE) | 1990 | S. Dakota | 95% | United States in trust for Maurice Williams |
| BHI-3033 (Stan) | 1992 | S. Dakota | 65% | Black Hills Museum of Nat. Hist., Hill City, SD |
| DMNH-2827 | 1992 | Colorado | 2% | Denver Museum of Nat. Hist., Denver, CO |
| "Z-rex" | 1992 | S. Dakota | 50% (?) | Unknown at this date |
| "Bowman" | 1993 | N. Dakota | 10% | Bowman, ND |
| 1993 | N. Dakota | 10% | Dakota Dinosaur Museum | |
| BHI-4100 (Duffy) | 1993 | S. Dakota | 30% (?) | Black Hills Museum of Nat. Hist., Hill City, SD |
| 1993 | Colorado | 10% | Denver Museum of N.H. | |
| "Scottie" | 1994 | Saskatchewan | 50% (?) | Royal Sask. Museum, Regina, SASK. |
| "U. of Wisc." | 1994 | Montana | 30% | Univ. of Wisc. Geology Museum, Madison, WI |
| 1994 | S. Dakota | unknown | Black Hills Institute | |
| "County rex" | 1994 | S. Dakota | (?) | Harding County, SD |
| "Steven" | 1995 | S. Dakota | (?) | Harding County, SD |