Burrinjucosteus asymmetricus is an extinct buchanosteid arthrodire placoderm. Its fossils have been found in Emsian-aged marine strata of the Murrumbidgee Group in New South Wales, Australia.White, E. I. (1978). The larger arthrodiran fishes from the area of the Burrinjuck Dam, N.S.W. Transactions of the Zoological Society of London, 34(2): 149–262.
Burrinjucosteus asymmetricus is known from scraps of thoracic armor and the skullroof, which suggest a very large, flat animal.
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