Biology:Heintzichthys

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Short description: Genus of fishes (fossil)

Heintzichthys
Temporal range: Late Devonian: Famennian, 371.1–359.3 Ma
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Placodermi
Order: Arthrodira
Suborder: Brachythoraci
Family: Selenosteidae
Genus: Heintzichthys
Whitley 1933
Species
  • Heintzichthys gouldii (Newberry, 1885) (type)
Synonyms
  • Dinichthys corrugatus (Newberry, 1893)
  • Dinichthys gracilis (Claypole, 1897)
  • Stenognathus corrugatus (Newberry, 1889)

Heintzichthys is an extinct monospecific genus of arthrodire placoderm that lived what is now Europe and North America during the Famennian stage of the Late Devonian period. The type specimen was discovered in the Cleveland Shale near Cleveland, Ohio, in the United States.[1]

Phylogeny

Heintzichthys 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 Heintzichthys:[2]

Eubrachythoraci 

Coccosteomorphi

 Pachyosteomorphi 

Rhachiosteus pterygiatus

Dunkleosteoidea 

Eastmanosteus calliaspis

Eastmanosteus pustulosus

Kiangyousteus yohii

Golshanichthys asiatica

Westralichthys uwagedensis

Dunkleosteus raveri

Dunkleosteus terrelli

Dunkleosteus amblyodoratus

 Heterostiidae 

Heterosteus ingens

Yinosteus major

Aspinothoracidi

Tapinosteus heintzi

Bullerichthys fascidens

Kendrickichthys cavernosus

Bruntonichthys multidens

Dinichthys herzeri

Hadrosteus rapax

Gorgonichthys clarki

 Selenosteidae 

Heintzichthys gouldii

Pachyosteus bulla

Gymnotrachelus hydei

Stenosteus angustopectus

Brachyosteus dietrichi

Melanosteus occitanus

Rhinosteus parvulus

According to a 2022 Jobbins et al. study, Heintzichthys was found to be a sister taxa to Gorgonichthys.[3]

Gymnotrachelus

Gorgonichthys

Heintzichthys

References

  1. Hansen, Michael C. (2005). "Phylum Chordata—Vertebrate Fossils". Fossils of Ohio. ODNR Bulletin 70. Columbus, Ohio: Ohio Department of Natural Resources. p. 290. 
  2. 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. 
  3. Jobbins, Melina; Rücklin, Martin; Ferrón, Humberto G.; Klug, Christian (2022). "A new selenosteid placoderm from the Late Devonian of the eastern Anti-Atlas (Morocco) with preserved body outline and its ecomorphology". Frontiers in Ecology and Evolution 10. doi:10.3389/fevo.2022.969158. ISSN 2296-701X. 

Wikidata ☰ Q21078591 entry