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Ctenognathichthys

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Ctenognathichthys
Temporal range: Anisian–Ladinian[1]
Fossil from Monte San Giorgio
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: †Louwoichthyiformes
Family: †Louwoichthyidae
Genus: †Ctenognathichthys
Bürgin, 1992
Species:
†C. bellottii
Binomial name
†Ctenognathichthys bellottii
(de Alessandri, 1910)
Synonyms

Ctenognathichthys is an extinct genus of prehistoric marine ray-finned fish that lived during the Middle Triassic epoch of Europe, in the former Tethys Ocean.[1][2]

Taxonomy and occurrence

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It contains a single species, C. bellottii from the Anisian–Ladinian-aged Besano Formation of Monte San Giorgio area (Swiss-Italian borderland),[3] the early Ladinian Prosanto Formation of canton Graubünden, Switzerland, and possibly the late Ladinian Alcover Unit of Spain.[2][4][5] Indeterminate remains are known from the middle Anisian of the Strelovec Formation of Slovenia.[6] A second species (C. hattichi Bürgin & Herzog 2002) from the Prosanto Formation was previously placed in this genus, but a 2009 study placed it in the new genus Luopingichthys alongside a species from China.[7]

Classification

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Ctenognathichthys was first classified as a member of the family Perleididae and order Perleidiformes, a group that is now considered paraphyletic.[3] More recently, it has been reclassified into the family Louwoichthyidae (order Louwoichthyiformes).[8]

Description

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Ctenognathichthys sp. fossil showing the elongate prehensile teeth

It was a small fish measuring 21 cm (8.3 in) in total length.[9] It had long prehensile teeth in its upper and lower jaws.[3]

See also

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References

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  1. ^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2011-07-23. Retrieved 2009-02-27.
  2. ^ a b "PBDB Taxon". paleobiodb.org. Retrieved 2024-06-27.
  3. ^ a b c Bürgin, T. (1992). "Basal ray-finned fishes (Osteichthyes; Actinopterygii) from the Middle Triassic of Monte San Giorgio (Canton Tessin, Switzerland). Systematic palaeontology with notes on functional morphology and palaeoecology". Schweizerische Paläontologische Abhandlungen. 114: 1–164.
  4. ^ Bürgin, T.; Herzog, A. (2002). "Die Gattung Ctenognathichthys (Actinopterygii, Perleidformes) aus der Prosanto-Formation (Ladin, Mitteltrias) Graubündens (Schweiz), mit der Beschreibung einer neuen Art, C. hattichi sp. nov". Eclogae Geologicae Helvetiae. 95: 461–469.
  5. ^ Cartanyà, Joan; Fortuny, Josep; Bolet, Arnau; Garcia Artigas, Ruben (2019-05-24). "Moradebrichthys vilasecae gen. et sp. nov., a new perleidid (Actinopterygii: Osteichthyes) from the Middle Triassic of Catalonia (NE Iberian Peninsula)". Articles Publicats en Revistes (Mineralogia, Petrologia I Geologia Aplicada). 292 (2): 171–190. doi:10.1127/njgpa/2019/0816. hdl:2445/168813. ISSN 0077-7749.
  6. ^ Križnar, Matija; Tintori, Andrea. "The Kingdom of Tethys - The Fossilized World of Triassic Vertebrates from the Kamniško-Savinjske Alps / Kraljestvo Tetide - Okamneli svet triasnih vretenčarjev Kamniško-Savinjskih Alp". Scopolia - Suppl. 5 (Journal of the Slovenian Museum of Natural History).
  7. ^ Sun, Z.; Tintori, A.; Jiang, D.; Lombardo, C.; Rusconi, M.; Hao, W.; Sun, Y. (2009). "A New Perleidiform (Actinopterygii, Osteichthyes) from the Middle Anisian (Middle Triassic) of Yunnan, South China". Acta Geologica Sinica. 83 (3): 460–470. Bibcode:2009AcGlS..83..460S. doi:10.1111/j.1755-6724.2009.00067.x. S2CID 131017922.
  8. ^ Xu, G.-H. (2020). "A new stem-neopterygian fish from the Middle Triassic (Anisian) of Yunnan, China, with a reassessment of the relationships of early neopterygian clades". Zoological Journal of the Linnean Society. 191 (2): 375–394. doi:10.1093/zoolinnean/zlaa053.
  9. ^ Rieppel, O. (2019). Mesozoic Sea Dragons: Triassic Marine Life from the Ancient Tropical Lagoon of Monte San Giorgio. Indiana University Press. p. 54. doi:10.2307/j.ctvd58t86. ISBN 978-0253040114. S2CID 241534158.
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