| Authors(s) | Milstead, W. W. |
| Year | 1967 |
| Title | Fossil box turtles (Terrapene) from central North America, and box turtles of eastern Mexico. Copeia |
| Authors(s) | Milstead, W. W. |
| Year | 1967 |
| Title | Fossil box turtles (Terrapene) from central North America, and box turtles of eastern Mexico. Copeia |