| Name | Author | Source | Citation | Year |
|---|
| Centroceras gasparrinii var. minus ('minor') | M.A. Wolf, A. Buosi, A.S. Juhmani & A. Sfriso | Phytotaxa | 415: 238, figs. 3-12 | 2019 |
| Ctenophora sinensis | Bing Liu & D.M. Williams in Liu et al. | Phytotaxa | 460: 119, figs. 2-41 | 2020 |
| Neidiomorpha gusevii | A. Glushchenko, M. Kulikovskiy & J.P. Kociolek in Glushchenko et al | Phytotaxa | 415: 280, figs. 1-24 | 2019 |
| Sheathia abscondita | R. Stancheva, R. Sheath & M.L. Vis in Vis et al. | Algae | 35: 217, fig. 2A-F | 2020 |
| Sheathia californica | R. Stancheva, R. Sheath & M.L. Vis in Vis et al. | Algae | 35: 220, fig. 2G-J | 2020 |
| Sheathia matouensis | J.-F. Han, F.-R. Nan, J. Feng, J.-P. Lv, Q. Liu, X.-D. Liu, & S.-L. Xie | Phytotaxa | 415: 257, fig. 2 | 2019 |
| Sheathia plantuloides | M.L. Vis in Vis et al. | Algae | 35: 220, fig. 2K | 2020 |
| Sheathia transpacifica | M.L. Vis in Vis et al. | Algae | 35: 221, fig. 2L-P | 2020 |
| Sphaerozosma luetzelburgianum | Krieger | Ber. Deutsch. Bot. Ges. | 63: 43, fig. 7 | 1950 |
| Spondylosium luetzelburgianum | (Krieger) G.J.P. Ramos & C.W.N. Moura | Phytotaxa | 415: 85 | 2019 |
| Spondylosium simplex | (Kurt Förster & Eckert) G.J.P. Ramos & C.W.N. Moura | Phytotaxa | 415: 87 | 2019 |