| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Megayoldia martyria (Dall, 1897) |
Oblique yoldia | Eastern Pacific | |
| Megayoldia montereyensis (Dall, 1893) |
Monterey yoldia | Eastern Pacific | |
| Megayoldia thraciaeformis (Storer, 1838) |
Broad yoldia | Western Atlantic, Northern and Central Pacific, and the Arctic | 6.5 |