Ctenognathichthys
Temporal range:
Fossil from Monte San Giorgio
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
?†Perleidiformes/
?†Louwoichthyiformes
Genus:
†Ctenognathichthys

Bürgin, 1992
Type species
†Heterolepidotus bellottii
de Alessandri, 1910
Ctenognathichthys sp. fossil showing the elongate prehensile teeth

Ctenognathichthys is an extinct genus of prehistoric bony fish that lived during the Anisian and Ladinian ages of the Middle Triassic epoch in what is now southern/southeastern Switzerland and northern Italy.[1]

It was a small fish measuring 21 cm (8.3 in) in total length.[2] It had long long prehensile teeth in its upper and lower jaws.[3]

Occurrence

Fossils of Ctenognathichthys were recovered from the Anisian–Ladinian aged Besano Formation of Monte San Giorgio area (Swiss-Italian borderland)[3] and from the early Ladinian Prosanto Formation of canton Graubünden, Switzerland.[4] The type species is Ctenognathichthys bellottii, which was found in both collecting sites. A possible second species, Ctenognathichthys hattichi,[4] is only known from the Prosanto Formation. This species was referred to the genus Luopingichthys.[5]

Classification

Ctenognathichthys was first classified as a member of the family Perleididae and order Perleidiformes.[3] More recently, it was included in the family Louwoichthyidae (order Louwoichthyiformes).[6]

See also

References

  1. 1 2 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. ↑ 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.
  3. 1 2 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.
  4. 1 2 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. ↑ 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.
  6. ↑ 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.


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