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Amazichthys

From Wikipedia, the free encyclopedia
Extinct genus of armored fish

Amazichthys
Temporal range: Famennian
Holotype specimen AA.MEM.DS.8 (A and B), and paratype PIMUZ A/I 4773 (C, D)
Life reconstruction
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Placodermi
Order:Arthrodira
Suborder:Brachythoraci
Family:Selenosteidae
Genus:Amazichthys
Jobbinset al, 2022
Species:
A. trinajsticae
Binomial name
Amazichthys trinajsticae
Jobbinset al, 2022

Amazichthys is anextinct genus ofselenosteidarthrodire from theMiddle Famennian of theLate Devonian of theAnti-Atlas Mountains ofMorocco. It contains a single species,Amazichthys trinajsticae. It is one of a few example ofplacoderm known from whole body shape, including cartilaginous axial and fin elements.[1]

Description

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Amazichthys had a profile similar to that of fast-movingpelagic fishes, with lateral keels for stability, and alunate caudal fin, suggesting it could reach and maintain high speed.[1] Theholotype, AA.MEM.DS.8, is 89.7 cm (35.3 in) long.[1][2]

Etymology

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Amazichthys trinajsticae was named after the North African ethnic groupAmazigh (Berbers), and Australian palaeontologistKate Trinajstic.[1]

Taxonomy

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Amazichthys is part ofSelenosteidae, a family inside the cladeAspinothoracidi, inside ofPachyosteomorphi, along withDunkleosteoidea.

Thecladogram shown here is based on Jobbinset al, 2022.[1]

References

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  1. ^abcdeJobbins, 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.hdl:10550/85583.ISSN 2296-701X.
  2. ^Engelman, Russell K. (2023)."A Devonian Fish Tale: A New Method of Body Length Estimation Suggests Much Smaller Sizes forDunkleosteus terrelli (Placodermi: Arthrodira)".Diversity.15 (3). 318.doi:10.3390/d15030318.
Gnathostomata
Placodermi
Arthrodira
    • see below↓
Wuttagoonaspidae
Phyllolepida
Phyllolepididae
Actinolepidae
Phlyctaeniidae
Arctolepididae
Groenlandaspididae
Williamsaspididae
Holonematidae
Homostiidae
Migmatocephala
Buchanosteidae
Eubrachythoraci
    • see below↓
Kudjanowiaspis

Ailuracantha dorsofelisDicksonosteus arctirusCartieraspis

Groenlandaspis riniensis
Coccosteomorphi
Coccosteoidea
Coccosteidae
Panxiosteidae
Incisoscutoidea
Camuropiscidae
Pachyosteomorphi
Dunkleosteoidea
Heterosteidae
Aspinothoracidi
Brachydeiridae
Selenosteidae
Coccosteus cuspidatusDunkleosteus terrelliTitanichthys termieri


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