| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Thaumastognathia diceros Monod, 1926 |
Southwest Pacific | ||
| Thaumastognathia metaphone Cohen & Poore, 1994 |
South Australia | ||
| Thaumastognathia orectognathus Cohen & Poore, 1994 |
Eastern Indian Ocean | ||
| Thaumastognathia wasmannia Cohen & Poore, 1994 |
Tasmania, Australia |