- Trionyx formosus Gray, 1869
- Trionyx peguensis Gray, 1870
- Nilssonia formosa Gray, 1872
- Isola peguensis Gray, 1873
- Trionyx grayii Theobald, 1875
- Aspidonectes formosus Baur, 1893
- Isola formosa Hay, 1904
- Trionyx formosa Gadow, 1923
- Amyda formosus Mell, 1929
- Trionyx grayi Smith, 1931 (ex errore)
- Amyda formosa Mertens, Müller & Rust, 1934
- Trionyx fomosus Gosławski & Hryniewicz, 1993 (ex errore)
- Trionyx formosanus Jenkins, 1995 (ex errore)
- Trionix formosus Richard, 1999
|