Kingdom Animalia Linnaeus, 1758 - animals Phylum Sipuncula Rafinesque, 1814 - peanut worms see Class Sipuncula Class Phascolosomida see Subclass Phascolosomida Order Aspidosiphoniformes E. Cutler & Gibbs, 1985 1 Family Aspidosiphonidae Baird, 1868