Genus: Ctenacodon MARSH, 1879
Etymology: Greek, kten- (kteis), “comb”, Greek, ake, “point” and Greek, odon, “tooth”: Comb-point tooth.

Species: serratus MARSH, 1879
Etymology:

Holotype: YPM 11833

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: Fragmentary lower jaw with teeth.

Referred material:

Number: Not given: Lower jaw with teeth.

Number: Not given: An Incisor.

MARSH, 1880

Number: Not given: Nearly complete lower jaw with teeth.

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Species: nanus MARSH, 1881
Etymology:

Holotype: YPM 11832

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: Right mandible with p1-m1.

Referred material:

YPM 13668: Left lower jaw in matrix, inner aspect, complete save for tip of coronoid, incisor and molars.

USNM 2688: Lower jaw with p1-4 well preserved and little worn.

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Species: laticeps (MARSH, 1881)
Etymology:
= Allodon laticeps MARSH, 1881

Holotype: YPM 11761

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: Fragmentary left maxilla with P1-M2.

Plesiotypes:

Locality: Como Bluff, Wyoming.

Horizon: Member? Morrison Formation.

Biostratigraphy: Zone?

Age: Age?, Stage?, Malm Epoch, Late Jurassic.

Material:

USNM 2681: Upperjaw containing M1 and 3 premolars.

USNM 2682: Left upper jaw with last premolar and 2 molars.

Referred material:

ENGELMANN, 2004

Locality: Quarry face as exposed inside the Dinosaur National Monument Visitor Center, Carnegie Quarry, Vernal, Uintah County, Utah.

Horizon: Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

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

Material:

DINO 14989: Left maxilla with P3 and P5 in place, and is missing posterior to P5.

DINO 12831, 12832, 12845: Teeth.

DINO 10789, 13530: Isolated teeth.


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Species: scindens SIMPSON, 1928
Etymology:

Holotype: YPM 10366

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: Left mandible with p3-m2.
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Species: brentbaatar BAKKER, 1998
Etymology: “Brent” plus “bataar” Mongolian for “hero” to honor Brent Breithaupt for his contributions to Wyoming Paleontology.

Holotype: Tate Museum 4003

Locality: Locality BB, Breakfast Bench, 1.1 km south of Marsh Quarry 13, Como Bluff, Albany County, Wyoming.

Horizon: Member? Uppermost Morrison Formation.

Biostratigraphy: Zone?

Age: Age?, Stage?, Malm Epoch, Late Jurassic.

Material: Fragmentary right maxilla with P2 upper Pt, alveolus for upper M1 and M2.