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 | Pyramimonadophyceae |
| order | Pyramimonadales Chadefaud |
| family | Pterospermataceae Lohmann |
| genus | Pterosperma Pochet |
| species | Pterosperma michaelsarsii (Gaarder) Parke et Boalch |