Pericyclus trochus (FOSSIL) D. Korn & al., 2010 †
Polaricyclus ballardensis (FOSSIL) (W.J. Gordon, 1964 †)
Polaricyclus bordenensis (FOSSIL) Work & Mason, 2003 †
Polaricyclus conkini (FOSSIL) Work & Mason, 2004 †
Polaricyclus minimus (FOSSIL) (Hind, 1910 †)