Genus: Apatodon MARSH, 1877 (nomen dubium)
Etymology: Greek, apatao, "deceive," and Greek, odon, "tooth."

Species: mirus MARSH, 1877 (nomen dubium)
Etymology: Latin, mirus, "wonderful."

Holotype: Unknown.

Locality: “Rocky Mountain region”.

Horizon: Morrison Formation.

Biostratigraphy:

Age: Age? Stage? Epoch? Late Jurassic.

Material: Fragment of vertebra.