Burrinjucosteus asymmetricus is an extinct buchanosteid arthrodire placoderm. Its fossils have been found in Emsian-aged marine strata of New South Wales, Australia.

Burrinjucosteus
Temporal range: Emsian
Artist's reconstruction
Scientific classification
Kingdom:
Phylum:
Class:
Order:
Family:
White, 1952
Genus:
Burrinjucosteus
Species:
B. asymmetricus
Binomial name
Burrinjucosteus asymmetricus
White, 1978

B. asymmetricus is known from scraps of thoracic armor and the skullroof, which suggest a very large, flat animal.

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