Queensland lungfish

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phylum Chordata Endemic to Australia, the Queensland lungfish is one of only six extant lungfish species in the world. Fossil records of this group date back 380 million years, around the time when the higher vertebrate classes were beginning to evolve. Fossils of lungfish almost identical to this species have been uncovered in northern New South Wales, indicating that Neoceratodus has remained virtually unchanged for well over 100 million years, making it a living fossil and one of the oldest living vertebrate genera on the planet.

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class Sarcopterygii
order Ceratodontiformes
family Ceratodontidae
genus Neoceratodus
species N. forsteri