| Authors(s) | Ernst, C. H. |
| Year | 1978 |
| Title | A revision of the neotropical turtle genus Callopsis (Testudines: Emydidae: Batagurinae). Herpetologica 34: 113-134. |
| Authors(s) | Ernst, C. H. |
| Year | 1978 |
| Title | A revision of the neotropical turtle genus Callopsis (Testudines: Emydidae: Batagurinae). Herpetologica 34: 113-134. |