Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Corticata | |
| Archaeplastida | |
| kingdom | Plantae Haeckel - plants |
| divisio | Chlorophyta Reichenbach, 1828 - green algae |
| class | Chlorodendrophyceae Massjuk |
| order | Chlorodendrales Fritsch |
| family | Pycnococcaceae Guillard |
| genus | Pycnococcus Guillard in Guillard, Keller, O'Kelly & Floyd |