Ceratodontidae

Ceratodontidae Temporal range: Early Triassic to Eocene, 251.3 - 57.0 mya (but see text) PreꞒ Ꞓ O S D C P T J K Pg N
Ceratodus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Sarcopterygii
Class:	Dipnoi
Order:	Ceratodontiformes
Family:	†Ceratodontidae Gill, 1872
Genera
See text

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

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 Ceratodontidae was more closely related to modern African (Protopteridae) and South American lungfish (Leptosirenidae) than Queensland lungfish.^[1] However, Brownstein, Harrington & Near (2023) found Ceratodontidae to lie outside the crown group of modern lungfish, with all modern lungfish more closely related to each other than to Ceratodontidae.^[2]

Genera

The following genera are known from the family:^[3]

• †Arganodus (alternatively placed in own family, Arganodontidae)
• †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][4]

References

• v
• t
• e

Dipnomorpha

Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Sarcopterygii Clade: Rhipidistia
Gnathostomata see Gnathostomata Dipnomorpha see below↓ Dipnomorpha

Dipnomorpha	†Arquatichthys †Powichthys †Youngolepis? †Porolepiformes Durialepis Hamodus Heimenia Porolepis Quebecius Holoptychiidae Duffichthys? Glyptolepis Holoptychius Laccognathus Pseudosauripterus Ventalepis? Dipnoi †Ctenodus †Conchopoma †Diabolepis †Dianodipterus †Eoctenodus †Gosfordia †Ichnomylax †Iranorhynchus †Isityumzi †Janvierpaucidentes †Megapleuron †Oervigia †Orlovichthys †Powichthys? †Proceratodus †Rhinodipterus †Sagenodus †Straitonia †Tarachomylax †Tranodis †Westollrhynchus †Uranolophidae Melanognathus Uranolophus †Dipnorhynchidae Dipnorhynchus Ganorhynchus Speonesydrion †Stomiahykidae Archaeonectes Stomiahykus †Chirodipteridae Chirodipterus Gogodipterus Palaedaphus Pillararhynchus Sorbitorhynchus Sunwapta †Holodontidae Asthenorhynchus Griphognathus Holodipterus Iowadipterus Robinsondipterus Xeradipterus †Dipteridae Amadeodipterus Conchodus Dipterus Howidipterus †Fleurantiidae Barwickia Fleurantia †Rhynchodipteridae Rhynchodipterus Soederberghia †Phaneropleuridae Andreyevichthys Nielsenia Phaneropleuron Pentlandia Scaumenacia †Uronemidae Ganopristodus Uronemus Ceratodontoidei †Ferganoceratodus †Paraceratodus †Ptychoceratodus Neoceratodontidae †Archaeoceratodus †Asiatoceratodus †Mioceratodus Neoceratodus †Ceratodontidae Arganodus Ariguna Ceratodus Epiceratodus Lupaceratodus Metaceratodus Microceratodus? Potamoceratodus Retodus Tellerodus †Gnathorhizidae Beltanodus Gnathorhiza Microceratodus? Monongahela Namatozodia Palaeophichthys? Persephonichthys Lepidosirenidae Lepidosiren Protopterus