In which fetal presentation vaginal delivery can be expected:
Vaginal delivery is not possible in:

Brow presentation
Shoulder presentation (transverse lie)
Mentoposterior presentation of face (i.e. when chin lies directed to sacrum)

In mentoanterior, i.e when chin lies under the symphysis pubis – vaginal delivery is possible.
Face presentation when the chin lies direct to the sacrum
Brow presentation
Shoulder presentation
Face presentation when the chin lies under the symphysis pubis