Poraspis

Poraspis Temporal range: Late Silurian–Lower Devonian PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Pteraspidomorphi
Subclass:	Heterostraci
Order:	Cyathaspidiformes
Suborder:	Cyathaspidida
Family:	Cyathaspidae
Genus:	Poraspis Kiær, 1930

Poraspis is an extinct genus of heterostracan. Fossils are found in Late Silurian and Early Devonian marine strata of Norway, Canada and the United States.