Chardonius Explained

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".^[3] The latter classification is now thought to be a wastebasket treatment.^[4] It is currently considered an indeterminate euteleost.

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

See also

• Prehistoric fish
• List of prehistoric bony fish

External links

• Bony fish in the online Sepkoski Database

Notes and References

1. Web site: PBDB Taxon . 2024-05-09 . paleobiodb.org.
2. 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 . 10.1006/cres.1999.0195 . 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 . Cretaceous Research . 30 . 6 . 1357–1366 . 10.1016/j.cretres.2009.07.005 . 0195-6671.
5. Evolutionary patterns derived from 150 million years of morphological and functional evolution in neopterygian fishes . Oxford University, UK . 2015 . English . J. . Clarke.
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 . en . 44 . 3 . 402–433 . 10.1017/pab.2018.8 . 0094-8373.