| Opephora P. Petit, 1889 |
| Opephora krumbeinii A. Witkowski, Witak, & K. Stachura apud Lange-Bert. & S.I. Genkal, 1999 |
| Opephora marina (W. Greg.) P. Petit, 1889 |
| Opephora mutabilis (Grunow) Sabbe & Wyverman, 1995 |
| Opephora olsenii Möller, 1950 |
| Opephora pacifica (Grunow) Petit, 1889 |
| Opephora schwartzii (Grunow) Petit ex Pelletan, 1889 |
| Pseudostaurosira D.M. Williams & Round, 1988 |
| Pseudostaurosira brevistriata (Grunow) D.M. Williams & Round, 1987 |
| Pseudostaurosira brevistriata var. elliptica (Hérib.) J.C. Kingston, 2000 |
| Staurosira Ehrenb., 1843 |
| Staurosira brevistriata (Grunow) Grunow, 1882 |
| Staurosira construens Ehrenb., 1843 |
| Staurosira venter (Ehrenb.) H. Kobayasi, 2002 |
| Staurosiraceae Medlin, 2016 |
| Staurosirella D.M. Williams & Round, 1988 |
| Staurosirella lapponica (Grunow) Williams & Round, 1987 |
| Staurosirella lapponica var. minuta Cleve, 1968 |
| Staurosirella pinnata (Ehrenb.) D.M. Williams & Round, 1987 |