Exutaspis

{{Speciesbox

| fossil_range = {{Fossil range|Emsian}}

| image =

| image_caption =

| genus = Exutaspis

| parent_authority = Liu & Wang, 1981

| species = megista

| authority = 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 {{convert|21|cm|in|abbr=on}} long.