| 1991 | Victor Hutchison | University of Oklahoma |
| 1992 | David Chiszar | University of Colorado |
| 1993 | Robert Powell | Avila University |
| 1994 | Joseph T. Collins | University of Kansas |
| 1995 | John Lokke | University of Nebraska, Omaha |
| 1996 | Janalee P. Caldwell | University of Oklahoma |
| 1997 | Rick Hudson | Fort Worth Zoological Park |
| 1998 | Andrew Holycross | Arizona State University |
| 1998 | David Chiszar | University of Colorado |
| 1998 | Aaron M. Bauer | Villanova University |
| 1998 | Richard A. Seigel | Southeastern Louisiana University |
| 1999 | Victor Hutchison | University of Oklahoma |
| 2000 | Robert Wilkinson | Missouri State University |
| 2001 | Walter E. Meshaka, Jr. | State Museum of Pennsylvania |
| 2002 | Frank T. Burbrink | Louisiana State University |
| 2003 | Steven J. Beaupre | University of Arkansas |
| 2004 | Alicia S. Mathis | Missouri State University |
| 2005 | Stanley E. Trauth | Arkansas State University |
| 2006 | James L. Knight | South Carolina State Museum |
| 2006 | Jerry D. Johnson | University of Texas, El Paso |
| 2007 | Emily Moriarty Lemmon | University of Texas, Austin |
| 2007 | Jonathan Campbell | University of Texas, Arlington |
| 2008 | Ronald M. Bonett | University of Tulsa, Oklahoma |
| 2009 | R. Alexander Pyron | Stony Brook University, New York |