Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Cabozoa | |
| kingdom | Rhizaria Cavalier-Smith, 2002 |
| phylum | Cercozoa Cavalier-Smith, 1998 |
| subphylum | Filosa Cavalier-Smith & Chao, 2003 |
| superclassis | Monadofilosa Cavalier-Smith, 1997 |
| class | Imbricatea Cavalier-Smith & Chao, 2003 |
| order | Euglyphida Copeland, 1956 |
| family | Euglyphidae Wallich, 1864 |
| genus | Placocista Leidy, 1879 |
| species | Placocista ventricosa Thomas & Gauthier-Lievre |