| Cymodoceaceae | ! |
Amphibolis
| C. Agardh | Sp. Alg. 1(2): 474 | |
| Cymodoceaceae | ! |
Cymodocea
| K.D. Koenig | Ann. Bot. (König & Sims) 2: 96 | 1805 |
| Cymodoceaceae | * |
Diplanthera
| Thouars | Gen. Nov. Madagasc. 3 | 1806 |
| Cymodoceaceae | ** |
Halodula
| Benth. & Hook. f. | Gen. Pl. 3: 1019 | 1883 |
| Cymodoceaceae | ! |
Halodule
| Endl. | Gen. Pl. 1368–1369 | 1841 |
| Cymodoceaceae | |
Pectinella
| J. M. Black | Trans. & Proc. Roy. Soc. South Australia 37: 1 | 1913 |
| Cymodoceaceae | |
Phycoschoenus
| (Asch.) Nakai | Ord. Fam. Trib. Gen. Prof. Nakai Ed. 211 | 1943 |
| Cymodoceaceae | ! |
Syringodium
| Kütz. | Alg. Mar. Exsicc. 9: 426 | 1860 |
| Cymodoceaceae | |
Thalassodendron
| Hartog | Verh. Kon. Akad. Wetensch,. Afd. Natuurk., Sect. 2 59(1): 186 | 1970 |