Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Cabozoa | |
| kingdom | Excavata Cavalier-Smith, 2002 |
| superphylum | Eozoa Cavalier-Smith & Yao, 1995 |
| phylum | Metamonada (Grassé, 1952) Cavalier-Smith, 1981 |
| subphylum | Trichozoa (Cavalier-Smith 1996) Cavalier-Smith,2003 |
| superclassis | Eopharyngia (Cavalier-Smith, 1993) Cavalier-Smith, 2003 |
| class | Trepomonadea Cavalier-Smith, 1993 |
| subclass | Enteromonadia Cavalier-Smith, 1996 - enteromonads |