Brachyosteus
{{Short description|Genus of fishes (fossil)}}
{{Automatic taxobox
| fossil_range = Late Devonian: Frasnian, {{Fossil range|382.7|372.2}}
| taxon = Brachyosteus
| authority = Jaeckel, 1927
| subdivision_ranks = Species
| subdivision =
- Brachyosteus dietrichi Gross, 1932
- Brachyosteus ooensis Gross, 1937
}}
Brachyosteus is an extinct genus of arthrodire placoderm from the Late Frasnian stage of the Late Devonian period. Fossils are found from Bad Wildungen, Germany.{{Cite journal |last1=Zhu |first1=You-An |last2=Zhu |first2=Min |last3=Wang |first3=Jun-Qing |date=1 April 2016 |title=Redescription of Yinostius major (Arthrodira: Heterostiidae) from the Lower Devonian of China, and the interrelationships of Brachythoraci |journal=Zoological Journal of the Linnean Society |volume=176 |issue=4 |pages=806–834 |doi=10.1111/zoj.12356|issn=0024-4082 |doi-access=free }}
Phylogeny
Brachyosteus is a member of the family Selenosteidae of the clade Aspinothoracidi, which belongs to the clade Pachyosteomorphi, one of the two major clades within Eubrachythoraci. The cladogram below shows the phylogeny of Brachyosteus:
{{clade| style=font-size:85%;line-height:85%
|label1=Eubrachythoraci
|1={{clade
|label2=Pachyosteomorphi
|2={{clade
|2={{clade
|label1=Dunkleosteoidea
|1={{clade
|2={{clade
|1={{clade
|2=Kiangyousteus yohii }}
|2={{clade
|2={{clade
|2={{clade
|1={{clade
|2=Dunkleosteus terrelli }}
|2={{clade
|label2=Heterostiidae
|2={{clade
|2=Yinosteus major }} }} }} }} }} }} }}
|label2=Aspinothoracidi
|2={{clade
|2={{clade
|1={{clade
|2={{clade
|2=Bruntonichthys multidens }} }}
|2={{clade
|2={{clade
|2={{clade| style=font-size:110%;line-height:95%
|label2=Selenosteidae
|2={{clade
|5=Brachyosteus dietrichi
|6={{clade
|2=Rhinosteus parvulus }} }} }} }} }} }} }} }} }} }} }}
References
{{Reflist}}
{{Arthrodira|E.}}
{{Taxonbar|from=Q97371182|from2=Q112324109}}
{{Placoderm-stub}}