| Undina Temporal range: Triassic-Cretaceous
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| Undina penicillata, at Göteborgs Naturhistoriska Museum | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Class: | Actinistia |
| Order: | Coelacanthiformes |
| Family: | Latimeriidae |
| Genus: | †Undina Münster, 1834 |
| Synonyms | |
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†Holophagus Egerton 1861 | |
Undina is a genus of prehistoric coelacanth, lobe-finned fish, which lived from the Triassic period to the Cretaceous period (Only ranges Sinemurian to Tithonian according to 2021 study[1]).
- ^ Cavin, Lionel; Piuz, André; Ferrante, Christophe; Guinot, Guillaume (2021-06-03). "Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity". Scientific Reports. 11 (1): 11812. Bibcode:2021NatSR..1111812C. doi:10.1038/s41598-021-90962-5. ISSN 2045-2322. PMC 8175595. PMID 34083600.