Arganodus is an extinct genus of freshwater lungfish that had a wide global distribution throughout much of the Triassic period, with a single species surviving across Gondwana into the Cretaceous.

[4] It has been suggested that shortly after the origin of Arganodus in the early Triassic, it spread into what is now Europe, evolving into A. multicristatus.

Before the Late Triassic, it diverged into two vicariant lineages separated by the Central Pangean Mountains: A. atlantis in the east, and A. dorotheae & the Cumnock species in the west, while going extinct in the European region.

It eventually went extinct in Laurasia, but one species, A. tiguidensis, managed to survive in Gondwana throughout the Jurassic and Cretaceous.

[3][4] Arganodus was probably similar to modern lungfish, and lived in underwater burrows during dry periods until monsoons occurred.