Ctenognathichthys

Ctenognathichthys; Temporal range: Anisian– Ladinian PreꞒ Ꞓ O S D C P T J K Pg N
	Fossil from Monte San Giorgio
Scientific 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
	† Heterolepidotus bellottii de Alessandri, 1910;

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

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

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

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]

References

^ ^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.
^ ^a ^b "PBDB Taxon". paleobiodb.org. Retrieved 2024-06-27.
^ ^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.
^ 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.
^ 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). ISSN 0077-7749.
^ 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).
^ 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. doi: 10.1111/j.1755-6724.2009.00067.x. S2CID 131017922.
^ 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.
^ 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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[sepkoskidb-1] 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.

[:0-2] "PBDB Taxon". paleobiodb.org. Retrieved 2024-06-27.

[Bürgin1992-3] 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.

[Bürgin&Herzog2002-4] 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). 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. 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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Ctenognathichthys Temporal range: Anisian– Ladinian^[1] PreꞒ Ꞓ O S D C P T J K Pg N

Fossil from Monte San Giorgio
Scientific 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
† Heterolepidotus bellottii de Alessandri, 1910

Taxonomy and occurrence

Classification

Description

See also

References