Аннотация:The presence of exponential bulges and anti-truncated disks has been noticed in
many lenticular galaxies. In fact, it could be expected because the very
formation of S0 galaxies includes various processes of secular evolution.
We discuss how to distinguish between a pseudobulge and an anti-truncated
disk, and also what particular mechanisms may be responsible for the
formation of anti-truncated disks. Some bright examples of lenticular
galaxies with the multi-tiers exponential stellar structures are presented,
among them -- two central group giant S0s seen face-on and perfectly
axisymmetric.