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.