Kingdom Animalia Suborder Psammosteida Phylum Chordata Order Heterostraci | Class Agnatha Family Pycnosteida Rank Genus | |
Similar Psammosteidae, Heterostraci, Drepanaspis, Doryaspis, Pteraspidiformes |
Pycnosteus is an extinct genus of jawless fish from the Devonian. It is thought to have cruised through vegetation, eating small invertebrates which it knocked loose .
References
Pycnosteus Wikipedia(Text) CC BY-SA