Genus: Palaeoctonus COPE, 1877 (nomen dubium)
Etymology:
= Palaeochtinus MEHL, 1915 (sic)
= Palaeoctomus Huene, 1902 (sic)

Species: appalachianus COPE, 1877 (nomen dubium)
Etymology:

Holotype: AMNH 2320.

Horizon: Black limestone and marl in the Phoenixville tunnel, York County, Pennsylvania.

Horizon:

Biostratigraphy:

Age: Carnian Stage, Lower Late Triassic Epoch, Late Triassic.

Material: Posterior Tooth.

Referred material:

AMNH 2337: Anterior tooth.

_____________________________________________________________________________________

Species: aulacodus COPE, 1878 (nomen dubium)
Etymology:
= Suchoprion aulacodus (COPE, 1878) (nomen dubium)

Holotype: AMNH 2355

Horizon: Black limestone and marl in the Phoenixville tunnel, York County, Pennsylvania.

Horizon:

Biostratigraphy:

Age: Late Triassic.

Material: Anterior tooth.

_____________________________________________________________________________________

Species: orthodon COPE, 1893 (nomen dubium)
Etymology:
= Nicrosaurus orthodon (COPE, 1893) (nomen dubium)

Holotype:

Locality: Paladuro Canyon, northwestern Texas.

Horizon: Dockum Formation.

Biostratigraphy:

Age: Carnian-?Rhaetian Stage, Late Triassic Epoch, Late Triassic.

Material: A single anterior tooth.

_____________________________________________________________________________________

Species: dumblianus COPE, 1893 (nomen dubium)
Etymology:
= Nicrosaurus dumblianus (COPE, 1893) (nomen dubium)

Holotype:

Locality: Paladuro Canyon, Northwestern Texas.

Horizon: Dockum Formation.

Biostratigraphy:

Age: Carnian-?Rhaetian Stage, Late Triassic Epoch, Late Triassic.

Material: Numerous teeth.