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Dorsetichthys

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Extinct genus of ray-finned fishes
Dorsetichthys
Temporal range: Early Jurassic (Sinemurian), 199.3–190.8 Ma
Fossil of Dorsetichthys bechei
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Teleostei
Order: Dorsetichthyiformes
Arratia, 2013
Family: Dorsetichthyidae
Arratia, 2013
Genus: Dorsetichthys
Arratia, 2013
Species:
D. bechei
Binomial name
Dorsetichthys bechei
(Agassiz, 1837)

Dorsetichthys is an extinct genus of marine stem-teleost ray-finned fish from the Early Jurassic period of Europe. It contains a single species, D. bechei, known from the Sinemurian-aged Lower Lias of England.[1]

Description

[edit ]

Dorsetichthys was an elongated teleost that could reach up to 20 centimetres (7.9 in) long.[2] [3] This fish had ganoid scales close to modern gars.[2]

Taxonomy

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The type species of Dorsetichthys, D. bechei, was formerly assigned to Pholidophorus , but Arratia (2013) recognized it as generically distinct from the Pholidophorus type species, placing it in the new family Dorsetichthyidae and new order Dorsetichthyiformes.[2]

Cladogram of Teleosteomorpha after Sferco et al. 2021:[4]

Teleostei total group (Teleosteomorpha)

Dorsetichthys

References

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  1. ^ "PBDB Taxon". paleobiodb.org. Retrieved 2024年12月12日.
  2. ^ a b c Arratia, Gloria (November 2013). "Morphology, taxonomy, and phylogeny of Triassic pholidophorid fishes (Actinopterygii, Teleostei)". Journal of Vertebrate Paleontology. 33 (sup1): 1–138. Bibcode:2013JVPal..33S...1A. doi:10.1080/02724634.2013.835642. ISSN 0272-4634. S2CID 86605978.
  3. ^ Nybelin, Orvar (1966). "On certain Triassic and Liassic representatives of the family Pholidophoridae s. str". Bulletin of the British Museum (Natural History) Geology. 11: 351––432.
  4. ^ Sferco, Emilia; López-Arbarello, Adriana; Báez, Ana María (December 2015). "Phylogenetic relationships of †Luisiella feruglioi (Bordas) and the recognition of a new clade of freshwater teleosts from the Jurassic of Gondwana". BMC Evolutionary Biology. 15 (1): 268. Bibcode:2015BMCEE..15..268S. doi:10.1186/s12862-015-0551-6 . ISSN 1471-2148. PMC 4668602 . PMID 26630925.
Teleostei sensu de Pinna, 1996 (= Teleosteomorpha)
Actinopterygii
Neopterygii
Teleostei
    • see below↓
Pachycormidae
Hypsocorminae
Asthenocorminae
Aspidorhynchidae
Pholidophoridae
sensu stricto
Archaeomaenidae
Siyuichthyidae
Pleuropholidae
Ankylophoridae
Catervariolidae
Cycloid clade
Leptolepididae
Ascalaboidae
Crossognathiformes
Ichthyodectiformes
Crown-Teleostei
    • see below↓
Elopomorpha
Orthogonikleithridae
Osteoglossomorpha
Tselfatiiformes
Protobramidae
Plethodidae
Clupeocephala


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