• Cellular forms
• Domain: Eukaryota
• Kingdom: Animalia
• Subkingdom: Monocytozoa or Protozoa

• Phyllum: Apicomplexa
• Phyllum: Euglenozoa
• Phyllum: Ciliophora - Ciliate
• Phyllum: Mixosporidia
• Phyllum: Myxozoa
• Phyllum: Microspora
• Phyllum: Sarcomastigophora