Genus: Comonecturoides HECHT & ESTES, 1960
Etymology: In reference to Como Bluff, Albany County, Wyoming, where the specimen was found

Species: marshi HECHT & ESTES, 1960
Etymology: In honor of O. C. Marsh.

Holotype: YPM 3919

Locality: Reed's Quarry 9 (Mammal Quarry), Como Bluff, (Sec. 12, T22N, R77W), Carbon County, Wyoming.

Horizon: Upper or Brushy Basin member, Morrison Formation.

Biostratigraphy: Zone 3.

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

Material: Right femur.