Ceratodontidae
Ceratodontidae is an extinct family of lungfish with fossils known from the earliest Triassic to the Eocene.
Ceratodontidae Temporal range: | |
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Ceratodus | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Sarcopterygii |
Class: | Dipnoi |
Order: | Ceratodontiformes |
Family: | †Ceratodontidae Gill, 1872 |
Genera | |
See text |
Taxonomy
Although the extant Queensland lungfish was formerly also classified in this family due to its similar appearance, phylogenetic and morphological evidence indicates that it belongs in a different family, Neoceratodontidae. A morphological study by Kemp et al (2017) proposed that Neoceratodontidae is basal to Ceratodontidae despite the former still being extant. However, Brownstein, Harrington & Near (2023) found Ceratodontidae to be the more basal family with a Paleozoic divergence and a cosmopolitan distribution, whereas Neoceratodontidae had a Mesozoic divergence and was found to belong to an exclusively Gondwanan clade alongside Protopteridae and Lepidosirenidae.[1]
Genera
The following genera are known from the family:[2]
- †Arganodus
- †Ariguna
- †Ceratodus
- †Epiceratodus
- †Lupaceratodus Galula Formation, Tanzania, Cretaceous
- †Metaceratodus
- †Microceratodus (?)
- †Potamoceratodus
- †Tellerodus
- †Retodus
Paraceratodus was also classified in this family but phylogenetic evidence supports it being the most basal member of Ceratodontoidei.[1][3]
References
- Kemp, Anne; Cavin, Lionel; Guinot, Guillaume (2017-04-01). "Evolutionary history of lungfishes with a new phylogeny of post-Devonian genera". Palaeogeography, Palaeoclimatology, Palaeoecology. 471: 209–219. doi:10.1016/j.palaeo.2016.12.051. ISSN 0031-0182.
- "Fossilworks: Ceratodontidae". fossilworks.org. Retrieved 17 December 2021.
- "Fossilworks: Paraceratodus". fossilworks.org. Retrieved 17 December 2021.