All Lenticular Galaxies

Galaxies whose own Wikipedia articles cite a NED de Vaucouleurs classification of S0, a disc galaxy with a large central bulge but no visible spiral arms, sitting on the Hubble sequence between the elliptical and spiral classes. A lenticular galaxy retains the flattened rotating disc of a spiral galaxy but has used up or lost most of the gas needed to keep forming new spiral structure, giving it the smooth light profile more typical of an elliptical galaxy while still showing disc rotation, as each member's own source article states of its own structure.