  Compared to inversion-symmetric systems, emerging bulk Dirac point (DP) in
noncentrosymmetric systems is much harder and its symmetry protection mechanism
is poorly understood. In this work, we propose that orthogonal glide symmetries
can protect two distinct types of bulk anisotropic DPs. One is the ordinary
anisotropic DP that is doubly degenerate only along one invariant axis, which
is resulted from symmetry-protected accidental band crossing. The other one is
a symmetry-enforced DP fixed at a non-time-reversal-invariant point, which is
doubly degenerate at three orthogonal directions. This unique topological phase
is exemplified by KSnSe$_{2}$ in space group 108. Our work not only unveils an
unique symmetry protection mechanism but also provides the first material
candidate for exploring multi-type Dirac fermions in noncentrosymmetric
systems.
