| Synonymous name | : | †Cyclopidius loganensis (Koerner, 1940) | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Cyclopidius schucherti (Thorpe, 1921) | |
Ref: PBDB: 12 Jul 2019. |
| Synonymous name | : | †Hadroleptauchenia eiselyi (Schultz & Falkenbach, 1968) | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Hadroleptauchenia primitiva Schultz & Falkenbach, 1968 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Leptauchenia harveyi Schultz & Falkenbach, 1968 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Leptauchenia martini Schultz & Falkenbach, 1968 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Leptauchenia minora Schlaikjer, 1935 | |
Ref: PBDB: 26 Jul 2015. |
| Synonymous name | : | †Leptauchenia parasimus Schultz & Falkenbach, 1968 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Pithecistes altageringensis Schultz & Falkenbach, 1968 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Pithecistes breviceps Loomis, 1925 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Pithecistes brevifacies (Cope, 1877) | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Pithecistes copei Schultz & Falkenbach, 1968 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Pithecistes decedens (Cope, 1884) | |
Ref: PBDB: 26 Jul 2015. |
| Synonymous name | : | †Pithecistes facies Cope, 1888 | |
Ref: PBDB: 30 Apr 2013. |
| Synonymous name | : | †Pithecistes mariae Schultz & Falkenbach, 1968 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Pithecistes tanneri Schultz & Falkenbach, 1968 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Pseudocyclopidius orellaensis (Schultz & Falkenbach, 1968) | |
Ref: PBDB: 27 Oct 2013. |