| Synonymous name | : | †Mephitis fodiens Hall, 1936 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Mephitis fossidens (Cope, 1896) | |
Ref: PBDB: 26 Jul 2015. |
| Synonymous name | : | †Mephitis leptops (Cope, 1899) | |
Ref: PBDB: 30 Apr 2013. |
| Synonymous name | : | †Mephitis orthostichus Cope, 1896 | |
Ref: PBDB: 26 Jul 2015. |
| Synonymous name | : | †Pelycictis lobulatus Cope, 1896 | |
Ref: PBDB: 26 Jul 2015. |