Kingdom Animalia Linnaeus, 1758 - animals Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812 Pisces Class Actinopterygii Woodward, 1891 - ray-finned fishes Order Acipenseriformes Berg, 1940 - sturgeons 1 Family Acipenseridae Bonaparte, 1832 - sturgeons 2 Family Polyodontidae Bonaparte, 1835 - paddlefishes