Ctenognathichthys Explained

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]

Taxonomy and occurrence

It contains a single species, C. bellottii from the Anisian–Ladinian-aged Besano Formation of Monte San Giorgio area (Swiss-Italian borderland),[2] the early Ladinian Prosanto Formation of canton Graubünden, Switzerland, and possibly the late Ladinian Alcover Unit of Spain.[3] [4] Indeterminate remains are known from the middle Anisian of the Strelovec Formation of Slovenia.[5] 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.[6]

Classification

Ctenognathichthys was first classified as a member of the family Perleididae and order Perleidiformes, a group that is now considered paraphyletic. More recently, it has been reclassified into the family Louwoichthyidae (order Louwoichthyiformes).[7]

Description

It was a small fish measuring in total length.[8] It had long prehensile teeth in its upper and lower jaws.

See also

Notes and References

  1. Web site: PBDB Taxon . 2024-06-27 . paleobiodb.org.
  2. 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.
  3. 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.
  4. 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) . 0077-7749.
  5. 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).
  6. 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 . 10.1111/j.1755-6724.2009.00067.x . 131017922 . free.
  7. 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 . 10.1093/zoolinnean/zlaa053 . free.
  8. Book: Rieppel . O. . Mesozoic Sea Dragons: Triassic Marine Life from the Ancient Tropical Lagoon of Monte San Giorgio . Indiana University Press . 2019 . 978-0253040114 . 54 . 10.2307/j.ctvd58t86 . 241534158.

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