Genus: Celsiodon CLACK, CHALLANDS, SMITHSON & SMITHSON, 2019
Etymology: In reference to the Celsius Bjerg, Greenland and Greek, odon, "tooth."

Species: ahlbergi CLACK, CHALLANDS, SMITHSON & SMITHSON, 2019
Etymology: In honor of Per Ahlberg, who picked up the specimen in Greenland, and hwo has subsequently became a major figure in sarcopteyrgina evolution.

Holotype: NHMD 209159

Locality: North Celsius Berjg, loose in talus below the East Plateau, Greenland.

Horizon: Celsius Berg Group.

Biostratigraphy:

Age: Latest Famennian Stage, Late Late Devonian Epoch, Latest Devonian.

Material: A small dissociated and partially eroaded skull.