Ceratodontidae

Ceratodontidae is an extinct family of lungfish with fossils known from the earliest Triassic to the Eocene.

Ceratodontidae
Temporal range:
Ceratodus
Scientific classification Edit this 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]

Paraceratodus was also classified in this family but phylogenetic evidence supports it being the most basal member of Ceratodontoidei.[1][3]

References
  1. 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.
  2. "Fossilworks: Ceratodontidae". fossilworks.org. Retrieved 17 December 2021.
  3. "Fossilworks: Paraceratodus". fossilworks.org. Retrieved 17 December 2021.
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