Editing Pterichthyodes (section)

{{Short description|Extinct genus of fishes}}
{{Automatic taxobox
| fossil_range = {{fossil range|Middle Devonian|ref=<ref name="dk" />}}
| image = Exhibit Museum of Natural History, Ann Arbor - IMG 9165.JPG
| image_caption=''Pterichthyodes milleri'' fossil on display at the [[University of Michigan Exhibit Museum of Natural History]]
| parent_authority = Stensiö, 1948
| taxon = Pterichthyodes
| authority = Bleeker, 1859
| type_species = †''Pterichthyodes milleri''
| synonyms = †''Pterichthys''
| range_map = Pterichthyodes finds map.png
| range_map_alt = A map of the United Kingdom area, with Scotland colored
| range_map_caption = {{legend|#00c6ff|Areas where ''Pterichthyodes'' has been found}}
}}

'''''Pterichthyodes''''' is a [[genus]] of [[antiarch]] [[placoderm]] fishes from the [[Devonian]] period. Its fossils have been discovered in [[Scotland]].<ref name="dk">{{cite book | title=Prehistoric Life: The Definitive Visual History of Life on Earth | publisher=[[Dorling Kindersley]] | author=Palmer, Douglas | year=2009 | location=New York | isbn=978-0-7566-5573-0 | page=134 | edition=first American|display-authors=etal}}</ref> They were one of the first [[species]] recognized for what they were, as their [[fossil]]s are common in the [[Old Red Sandstone]] formation studied by [[geologist]]s in the early 19th century. Due to their extreme divergence from modern-day fish, they were a puzzle unsolved until [[Charles Darwin]] brought forward his theories on [[evolution]].{{citation needed|date=November 2013}}