  We suggest a new point of view according to which baryon resonances can be
understood as collective excitations about intrinsic one-quark excitations in a
mean field of definite symmetry. This approach is justified in the limit of
large number of colours Nc, and is similar to the physics of large-A nuclei,
hence "quark nuclear physics". Although in the real world Nc is only three, we
obtain a good agreement with the observed resonance spectrum of light baryons
up to 2 GeV, and of lowest charmed baryon multiplets. A by-product of the
scheme is the prediction of new exotic charmed (and bottom) baryons that may be
stable against strong decays.
