Аннотация:We review our current knowledge about a particular case of decoupled
gas kinematics, inner ionized-gas polar disks. Though more difficult to be noticed, they
seem to be more numerous than their large-scale counterparts; our recent estimates
imply about 10% of early-type disk galaxies to be hosts of inner polar disks. Since in
the most cases the kinematics of the inner polar gaseous disks is decoupled from the
kinematics of the outer large-scale gaseous disks, and since they nested around very old
stellar nuclei, we speculate that the inner polar disks may be relic of very early events
of external gas accretion several Gyr ago. Such view is in agreement with our new
paradigm of disk galaxies evolutio