Exutaspis
| Exutaspis Temporal range: Emsian PreꞒ Ꞓ O S D C P T J K Pg N | |
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Suborder: | †Brachythoraci |
| Family: | †Buchanosteidae |
| Genus: | †Exutaspis Liu & Wang, 1981 |
| Species: | †E. megista |
| Binomial name | |
| †Exutaspis megista Liu & Wang, 1981 | |
Exutaspis megista is an extinct, "giant" buchanosteid arthrodire placoderm. Its fossils have been found in the Late Emsian-aged marine strata of the Jiucheng and Haikou Formations in Wuding, Yunnan.
It was originally described as a phlyctaeniid. Later, after comparison with the Chinese Buchanosteus guanxianesis, Exutaspis was reappraised as a buchanosteid. The holotype, a "head roof," is 21 cm (8.3 in) long.
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