| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Gnathostomula algreti Sterrer, 1991 |
Eastern Central Pacific | ||
| Gnathostomula arabica Riedl, 1971 |
Western Indian Ocean | ||
| Gnathostomula armata Riedl, 1971 |
Northwest Atlantic | ||
| Gnathostomula axi Kirsteuer, 1964 |
Western Indian Ocean, Western Central Atlantic, and the Mediterranean | 0.1 | |
| Gnathostomula brunidens Riedl, 1971 |
Northwest Atlantic | ||
| Gnathostomula costata Ehlers & Ehlers, 1973 |
Southeast Pacific | ||
| Gnathostomula jenneri Riedl, 1971 |
Northwest Atlantic | ||
| Gnathostomula karlingi Riedl, 1971 |
Eastern Central Pacific | ||
| Gnathostomula maldivarum Gerlach, 1958 |
Eastern Central Pacific, Western Central Atlantic, and Indian Ocean | ||
| Gnathostomula maorica Sterrer, 1991 |
Southwest Pacific | ||
| Gnathostomula mediocristata Riedl, 1971 |
Western Central Atlantic | ||
| Gnathostomula mediterranea Sterrer, 1970 |
Northwest Atlantic and the Mediterranean | ||
| Gnathostomula microstyla Riedl, 1971 |
Northwest Atlantic | ||
| Gnathostomula murmanica Mamkaeva, 1962 |
Northeast Atlantic and the Arctic | ||
| Gnathostomula nigrostoma Riedl, 1971 |
Northwest Atlantic | ||
| Gnathostomula paradoxa Ax, 1956 |
Northeast Atlantic and the Mediterranean | ||
| Gnathostomula peregrina Kirsteuer, 1969 |
Western Central Atlantic | ||
| Gnathostomula raji Sterrer, 1991 |
Western Central Pacific | ||
| Gnathostomula salotae Sterrer, 1991 |
Pacific Ocean | ||
| Gnathostomula uncinata Sterrer, 1998 |
Northwest Atlantic |