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Poraspis

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Poraspis
Temporal range: Late Silurian–Lower Devonian
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.[1] Fossils are found in Late Silurian and Early Devonian marine strata of Norway, Canada and the United States.

References

  1. ^ David K. Elliott & Michael A. Petriello (2011). "New poraspids (Agnatha, Heterostraci) from the Early Devonian of the western United States". Journal of Vertebrate Paleontology. 31 (3): 518–530. doi:10.1080/02724634.2011.557113.
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