the root (no rank)
Eukaryota (domain)
stramenopiles (kingdom)
[hide inferior taxa]
Bacillariophyta (phylum)
Chrysophyceae (class)
Labyrinthulida (order)
Olisthodiscus luteus (species)
Oomycetes (phylum)
Pelagophyceae (class)
Phaeophyceae (phylum)
Raphidophyceae (class)
Xanthophyceae (phylum)