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Abbreviated Dendrogram
Gnathostomata
│ └─Acanthodii etc (if traditional placement)
│
└─Placodermi
╞?═Acanthothoraci
├─Rhenanida
└─┬─Antiarchi
│ ├─Yunnanolepidoidei
│ └─Euantiarcha
└─┬─┬─Petalichthyida
│ └─Ptyctodontida
└─┬─┬─Arthrodira
? ├─Actinolepidoidei
│ └─┬─Phlyctaenioidei
│ └─┬─Brachythoraci
│ └─┬─Coccosteomorphi
│ └─┬─Pachyosteomorphi
│ └─Aspinothoracidi
╘═Acanthodii
├─Chondrichthyes
└─Osteichthyes
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Contents
Overview |
 Homosteus milleri (length at least 1.5 meters) (Arthrodira : Brachythoraci) with two Pterichthyodes milleri (Antiarch : Asterolepidoidei). Artwork by Dmitry Bogdanov. Wikipedia, GNU Free Documentation/Creative Commons Attribution license. The species name of both animals honours Scottish geologist and paleontologist Hugh Miller, who first discovered this and many other species of Devonian fish |
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