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"Diagram of the anterior fin (archipterygium) of Ceratodus." — Galloway

Archipterygium

"Diagram of the anterior fin (archipterygium) of Ceratodus." — Galloway

"Palatal view of skull of Ceratodus." — Encyclopedia Britannica, 1893

Ceratodus

"Palatal view of skull of Ceratodus." — Encyclopedia Britannica, 1893

"Fore-limb of Ceratodus." — Encyclopedia Britannica, 1893

Ceratodus

"Fore-limb of Ceratodus." — Encyclopedia Britannica, 1893

"Lung of Ceratodus, opened in its lower half to show its cellular pouches. a, right half; b, left half; c, cellular pouches; e, vena pulmonalis; f, arterial blood-vessel; oe, esophagus, opened to show glottis." — Encyclopedia Britannica, 1893

Ceratodus Lung

"Lung of Ceratodus, opened in its lower half to show its cellular pouches. a, right half; b, left half;…

The prehistoric fish, the Queensland dipnoan or Ceratodus.

Dipnoan

The prehistoric fish, the Queensland dipnoan or Ceratodus.

"Skeleton of Ceratodus fin. a., Central axis; r., radials; h., basal piece." -Thomson, 1916

Queensland Lungfish Fin

"Skeleton of Ceratodus fin. a., Central axis; r., radials; h., basal piece." -Thomson, 1916