Kingdom Animalia Linnaeus, 1758 - animals Phylum †Archaeocyathida Okulitch, 1935 1 Class †Regulares Vologdin, 1937 see Class Archaeocyatha Bornemann, 1884 2 Class †Irregulares Vologdin, 1937 see Class Archaeocyatha Bornemann, 1884 3 ?Order †Hetairacyathida Bedford & Bedford, 1937