| Former rank | : | Rhombognathides (Subgenus) Viets, 1927 | |
Ref: I. Bartsch, 2009: 121. [inferred] |
| Questionably Correct spelling | : | Rhombognathoides (Genus) Radford, 1950 | |
Ref: I. Bartsch (comp.), (2005): ("spelling?"). [false]. |
| Incorrect spelling | : | Rhombognathoides (Genus) Radford, 1950 | |
Ref: I. Bartsch, 2009: 121. [inferred] |