Pinguosteus thulborni is a species of arthrodire placoderm from the Gogo Reef Formation, of Late Devonian

Devonian

The Devonian is a geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period, about 416.0 ± 2.8 Mya , to the beginning of the Carboniferous Period, about 359.2 ± 2.5 Mya...

 Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

. The proportions of its armor, coupled with the relative lack of ornamentation on the armor make its classification difficult.

Etymology

The generic name is a compound of the Latin words pinguis, meaning "fat," and os, meaning "bone," in allusion to the broad proportions of its armor plates. The specific name commemorates Dr. Tony Thulborn.