|LGA(s)||North Burnett Region|
The name Ceratodus was given to the settlement about 1922  and derives from that of the Queensland lungfish, Neoceratodus forsteri. A railway station opened here 26 April 1924. On 12 September 1924, the District Postal Inspector, Maryborough Division, reported that 100 railway employees were camped at Ceratodus, engaged on bridge building and other railway work, and that there was one permanent settler (named Falconer) in the locality.
A receiving office opened at the railway station in January 1925 and was elevated to a post office by April 1926. The settlement was, for many years, a watering station for steam locomotives. In 1967 it was reported that the postmistress and station-mistress (Mrs J. Leard) also operated the telephone exchange (to which only one subscriber's service was connected) and that there were no shops or businesses in the settlement, only two railway cottages. The post office closed 31 May 1968.
- Macquarie Dictionary, Fourth Edition (2005). Melbourne, The Macquarie Library Pty Ltd. ISBN 1-876429-14-3
- "Ceratodus - town (entry 6794)". Queensland Place Names. Queensland Government. Retrieved 22 August 2016.
- "Ceratodus - locality (entry 45330)". Queensland Place Names. Queensland Government. Retrieved 22 August 2016.
- Memoirs of the Queensland Museum, Vol ix, 1928
- Frew, Joan (1981) Queensland Post Offices 1842-1980 and Receiving Offices 1869-1927, p. 231. Fortitude Valley, Queensland: published by the author, ISBN 0-9593973-0-2
- King, Harold J., in Stamp Collecting (London), 25 August 1967
- Eidsvold (Qld. : Shire). Council (1997), Ceratodus : the long journey, Eidsvold Shire Council, retrieved 22 August 2016
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