| Authors(s) | Gaffney, E. S. |
| Year | 1977 |
| Title | The sidenecked turtle family Chelidae: a theory of relationships using shared derived characters. Amer. Mus. Novitates (2620): 1-28. |
| Authors(s) | Gaffney, E. S. |
| Year | 1977 |
| Title | The sidenecked turtle family Chelidae: a theory of relationships using shared derived characters. Amer. Mus. Novitates (2620): 1-28. |