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From Wikipedia, the free encyclopedia

Brachythoraci
Temporal range: Devonian
Dunkleosteus and Titanichthys skulls in Wyoming Dinosaur Center
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Placodermi
Order: Arthrodira
Clade: Phlyctaenioidei
Suborder: Brachythoraci
Gross, 1932
Contained taxa

Brachythoraci is an extinct suborder of arthrodire placoderms, armored fish most diverse during the Devonian.

Phylogeny

Arthrodira is divided into three main groups: the paraphyletic Actinolepida and Phlyctaenii, and then the monophyletic Brachythoraci. Brachythoraci is then further divided into the large derived clade Eubrachythoraci and several basal groups: Buchanosteoidea, Homosteidae, and Holonematidae.[1] (Although Holonematidae's membership in Brachythoraci is disputed.)[2]

Below is a cladogram from the 2016 Zhu et al. phylogenetic study:[2]

Phlyctaenioidei

Elvaspis tuberculata

Dicksonosteus arcticus

Turrisaspis elektor

Groenlandaspis antarcticus

Holonema westolli

Brachythoraci
Homostiidae
Buchanosteoidea

Dhanguura johnstoni

Gemuendenaspis angusta

Xiangshuiosteus wui

Eubrachythoraci
Coccosteomorphi
Pachyosteomorphi
"Phlyctaenii"

References

  1. ^ You-An Zhu; Min Zhu (2013). "A redescription of Kiangyousteus yohii (Arthrodira: Eubrachythoraci) from the Middle Devonian of China, with remarks on the systematics of the Eubrachythoraci". Zoological Journal of the Linnean Society. 169 (4): 798–819. doi:10.1111/zoj12089.
  2. ^ a b Zhu, You-An; Zhu, Min; Wang, Jun-Qing (1 April 2016). "Redescription of Yinostius major (Arthrodira: Heterostiidae) from the Lower Devonian of China, and the interrelationships of Brachythoraci". Zoological Journal of the Linnean Society. 176 (4): 806–834. doi:10.1111/zoj.12356. ISSN 0024-4082.


This page was last edited on 28 January 2024, at 03:06
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