Spectroscopic comparison between PS16dtm and several well-studied normal luminosity and superluminous SNe IIn. Our +119- and +181-day spectra of PS16dtm are shown in magenta and pink, respectively. While there exist some similarities in the Fe II features with, e.g., SN 2010jl and SN 1996al, the overall spectra of typical SNe IIn are quite different from PS16dtm. PS16dtm does not show strong He I lines as are seen in all of these comparison events, the complexity in the blue part of the spectrum of PS16dtm is not seen in many SNe IIn, and the Balmer lines are weaker in PS16dtm.