Domain Eucaryota
   Subdomain Amoebota Doweld (2001)
     Kingdom Amoebobiota Doweld, 2001
       Subkingdom Coelodendrobiotina Doweld, 2001
         Phylum Coelodendrozoa Doweld, 2001
           Class Cyrtocalpatea Doweld, 2001
             Order Thalassicollida Doweld, 2001
               Family Thalassicollidae Haeckel, 1862
                 Genus Thalassicolla Huxley, 1851