  The status of $N\Delta$ and $\Delta\Delta$ dibaryons introduced by Dyson and
Xuong in 1964 is briefly reviewed with focus on the d*(2380), tentatively
assigned as a $\Delta\Delta$ dibaryon resonance. It is argued that the
apparently small value of width, $\Gamma_{d^\ast}$$\approx$70 MeV, favors
hadronic structure for the d*(2380) dibaryon rather than a six-quark structure.
