Althaspis is an extinct genus of pteraspidid heterostracan agnathan.[1] Fossils are found in Early Devonian-aged marine strata of Europe

References

  1. ^ "Althaspis". Paleobiology database. Archived from the original on May 27, 2013. Retrieved October 2, 2011.


Allikas: https://en.wikipedia.org/wiki/Althaspis
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