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]
| Chardonius ↓ | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Cohort: | Euteleostei |
| Genus: | †Chardonius Taverne, 1975 |
| Species: |
†C. longicaudatus
|
| Binomial name | |
| †Chardonius longicaudatus Taverne, 1975 | |
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]
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