Pteraspis

phylum	Chordata	Pteraspis (meaning wing shield) is an extinct genus of primitive jawless fish that lived in the Devonian period of what is now Britain and Belgium. Pteraspis grew to a length of 8 inches (20 centimeters). For more information, visit the Wikipedia entry. Get back to Agnatha
class	†Heterostraci
order	Pteraspidiformes
family	Pteraspidae
genus	Pteraspis
species	P. stensioei
Period	Early Devonian

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  Kaiyodo Dinotales 2 Pteraspis