Domain Eucaryota Subdomain Chlorota Doweld (2001) Kingdom Peridiniobiota Starobogatov ex Doweld (2001) Subkingdom Peridiniobiotina Doweld (2001) Phylum Metchnikovellozoa Doweld, 2001 [monotypic] 1 Class Metchnikovellatea Weiser, 1977