Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta |
| Corticata | |
| kingdom | Chromalveolata Adl et al., 2005 |
| phylum | Heterokontophyta |
| subphylum | Phaeista Cavalier-Smith, 1995 |
| infraphylum | Chrysista (Cavalier-Smith, 1986) Cavalier-Smith, 1995 |
| superclassis | Limnistia Cavalier-Smith, 1996 |
| class | Raphidophyceae M. Chadefaud ex P.C. Silva, 1980 |
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