Genus: Melanodon SIMPSON, 1927
Etymology: Greek, melanos, “black” and Greek, odon, “tooth”: Black tooth.
= Malthacolestes SIMPSON, 1927
Etymology: Greek, malthakos, “soft, gentle” and Greek, lestes, “thief”: Meek thief.

Species: oweni SIMPSON, 1927
Etymology: In honor of Richard Owen.

Holotype: YPM 10663

Locality: Reeds YPM Quarry 9, (Mammal Quarry), T22N, R77W, Sec. 12, Como Bluff, Albany County, Wyoming.

Horizon: Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

Age: Upper Part, Comobluffian age, Kimmeridgian Stage, uppermost Malm Epoch, Late Jurassic.

Material: Part of right maxilla with P4 and M1-5.

Referred material:

YPM 13752: Maxilla fragment of UM1-2.

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Species: osborni SIMPSON, 1927
Etymology: In honor of Henery Osborn.
= Malthacolestes osborni SIMPSON, 1927

Holotype: YPM 13751

Locality: Reeds YPM Quarry 9, (Mammal Quarry), T22N, R77W, Sec. 12, Como Bluff, Albany County, Wyoming.

Horizon: Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

Age: Upper Part, Comobluffian age, Kimmeridgian Stage, uppermost Malm Epoch, Late Jurassic.

Material: Part of right maxilla with M1-2.

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Species: grandis (SIMPSON, 1929)
Etymology:

Holotype: YPM 13727

Locality: Reeds YPM Quarry 9, (Mammal Quarry), T22N, R77W, Sec. 12, Como Bluff, Albany County, Wyoming.

Horizon: Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

Age: Upper Part, Comobluffian age, Kimmeridgian Stage, uppermost Malm Epoch, Late Jurassic.

Material: Part of a right lower jaw with m1-4 broken.