Exutaspis

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.

Exutaspis
Temporal range: Emsian
Scientific classification
Kingdom:
Phylum:
Class:
โ€ Placodermi
Order:
Family:
White, 1952
Genus:
Exutaspis
Species:
E. megista
Binomial name
Exutaspis megista
Liu & Wang, 1981

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.

References


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