What is Pteraspid?
{{Automatic taxobox | fossil_range = Upper [[Silurian]]-[[Devonian]] | image = Lamiaspis longiripa.jpg | image_caption = ''[[Lamiaspis]] longiripa'' | taxon = Pteraspidiformes | authority = Berg 1940 | subdivision_ranks = Suborders and families | subdivision = * [[Anchipteraspididae]] * [[Podolaspididae]] * [[Protopteraspididae]] * [[Psammosteida]] ** [[Drepanaspididae]] ** [[Guerichosteidae]] ** [[Obrucheviidae]] ** [[Psammolepididae]] ** [[Psammosteidae]] ** [[Pycnosteidae]] * [[Pteraspidoidei]] ** [[Gigantaspididae]] ** [[Larnovaspididae]] ** [[Pteraspididae]] ** [[Protaspididae]] ** [[Rhinopteraspididae]] ** [[Skalviaspididae]] }} '''Pteraspids''' were early [[agnatha]]n [[vertebrates]]. They lived from later [[Silurian]] to the end of the [[Devonian]]. Fossils are found in Europe and North America. The whole group has the head and front of the body [[armour]]ed. Delicate, finger-like parts of the plates were at the edges of the mouth. This suggests they were [[filter feeder]]s taking [[plankton]] from the water column.<ref name=purnell>Purnell, Mark A. 2002. Feeding in extinct jawless heterostracan fishes and testing scenarios of early vertebrate evolution. ''Proceedings of the Royal Society of London B: Biological Sciences''. '''269''' (1486) 83-88.[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1690863/pdf/11788040.pdf]</ref> == References == {{reflist}} {{-}} {{biology-stub}} [[Category:Agnatha]]