Chardonius is an extinct genus of prehistoric freshwater ray-finned fish from the late Aptian or early Albian. It contains a single species, C. longicaudatus, from the Loia Beds of the Democratic Republic of the Congo.[1][2]

Its taxonomic placement is uncertain, and it has been alternatively classified as a "clupeoid" or a "salmoniform".[2][3] The latter classification is now thought to be a wastebasket treatment.[4] It is currently considered an indeterminate euteleost.[5]

Morphologically, it is notable for the extreme anterior insertion point of its dorsal fin compared to the anal fin.[5][6]

See also

References

  1. ^ "PBDB Taxon". paleobiodb.org. Retrieved 2024-05-09.
  2. ^ a b López-Arbarello, Adriana. "The record of Mesozoic fishes from Gondwana (excluding India and Madagascar)". Mesozoic Fishes 3 – Systematics, Paleoenvironments and Biodiversity.
  3. ^ Maisey, John G. (2000-04-01). "Continental break up and the distribution of fishes of Western Gondwana during the Early Cretaceous". Cretaceous Research. 21 (2): 281–314. doi:10.1006/cres.1999.0195. ISSN 0195-6671.
  4. ^ Gallo, Valéria; de Figueiredo, Francisco J.; Azevedo, Sergio A. (2009). "Santanasalmo elegans gen. et sp. nov., a basal euteleostean fish from the Lower Cretaceous of the Araripe Basin, northeastern Brazil - Supplementary Material" (PDF). Cretaceous Research. 30 (6): 1357–1366. doi:10.1016/j.cretres.2009.07.005. ISSN 0195-6671.
  5. ^ a b Clarke, J. (2015). Evolutionary patterns derived from 150 million years of morphological and functional evolution in neopterygian fishes (Thesis). Oxford University, UK.
  6. ^ Clarke, John T.; Friedman, Matt (2018). "Body-shape diversity in Triassic–Early Cretaceous neopterygian fishes: sustained holostean disparity and predominantly gradual increases in teleost phenotypic variety". Paleobiology. 44 (3): 402–433. doi:10.1017/pab.2018.8. ISSN 0094-8373.
Allikas: http://en.wikipedia.org/wiki/Chardonius
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