  We propose a general and complete classification of all possible new and old
kinds of surface plasmon waves that can propagate at boundaries of arbitrary
linear, local bi-anisotropic media, including the quartic metamaterials. For
arbitrary frequency, wavelength, propagation direction, penetration depths and
fields of the proposed surface plasmon waves we found the dispersion condition
and determined the 72-parametric class of media that support a particular
surface plasmon. A member of each class is a pair of anisotropic materials
without magnetoelectric couplings.
