A brief survey is presented of recently discovered hadrons, some of them
presumably demonstrating a new kind of internal structure. This includes :
spin-singlet quarkonium, mesons with unexpected mass or width, baryons with two
heavy quarks, and pentaquark candidates. Flavour configurations with a
combination of light and heavy quarks appear as particularly promising.Comment: Based on an invited talk at the session on Subnucleon degrees of
freedo
