| Burrinjucosteus Temporal range:
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|---|---|
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| Artist's reconstruction | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Suborder: | †Brachythoraci |
| Family: | †Buchanosteidae |
| Genus: | †Burrinjucosteus White, 1978 |
| Species: | †B. asymmetricus
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| Binomial name | |
| †Burrinjucosteus asymmetricus White, 1978
| |
Burrinjucosteus asymmetricus is an extinct buchanosteid arthrodire placoderm. Its fossils have been found in Emsian-aged marine strata of New South Wales, Australia.
Burrinjucosteus asymmetricus is known from scraps of thoracic armor and the skullroof, which suggest a very large, flat animal.