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Astraspis
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Astraspis is an extinct genus of primitive jawless fish from the Ordovician of Central North America including the Harding Sandstone of Colorado and Bighorn Mountains of Wyoming. It is also known from Bolivia.
Wikipedia
Scientific name
:
Astraspis
Class
:
†Pteraspidomorphi
Rank
:
Genus
Order
:
†Pteraspidiformes