Ichnogenus: Thinopus BEECHER, 1896
Etymology:

Ichnospecies: antiquus BEECHER, 1896
Etymology: Latin, antiquus, "antique, old."

Holotype: YPM 784

Locality: Near the town of Pleasant, Warren County, Pennsylvania.
Note: This town is under a new name.

Horizon: Chemung Formation.

Biostratigraphy:

Age: Late Devonian.

Material: A single pes print.
Note: This is no longer thought to be from a tetrapod.