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Youngolepis Temporal range: Early Devonian
Photograph (a) & virtual rendering (b) of specimen IVPP V28375 in dorsal view
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Sarcopterygii
Class:	Dipnoi
Genus:	†Youngolepis
Type species
†Youngolepis praecursor Chang & Yu, 1981

Youngolepis is a genus of prehistoric lungfish which lived during the Early Devonian period (Lochkovian to Pragian stages, about 407-416 million years ago). Fossils of Y. praecursor have been found in the Xitun Formation of China & the Bac Bun Formation of Trang Xa, Vietnam. Some additional fossil specimens from the Xishancun Formation of China have been referred to Youngolepis sp. & represent the oldest known occurrence of the genus. In addition, Y. praecursor is also found in the Xujiachong formation

References

1. Cui, Xindong; Friedman, Matt; Qiao, Tuo; Yu, Yilun; Zhu, Min (2022-05-02). "The rapid evolution of lungfish durophagy". Nature Communications. 13 (1): 2390. Bibcode:2022NatCo..13.2390C. doi:10.1038/s41467-022-30091-3. ISSN 2041-1723. PMC 9061808. PMID 35501345. S2CID 248504614.
2. Zhu, Min; Fan, Junhang (1995). "Youngolepis from the Xishancun Formation (Early Lochkovian) of Qujing; China". Geobios. 28: 293–299. Bibcode:1995Geobi..28..293Z. doi:10.1016/S0016-6995(95)80130-8. ISSN 0016-6995.

v t e Dipnomorpha
Kingdom: Animalia Phylum: Chordata Clade: Osteichthyes Clade: Sarcopterygii Clade: Rhipidistia Gnathostomata see Gnathostomata Dipnomorpha see below↓ Dipnomorpha
Dipnomorpha †Arquatichthys †Powichthys †Porolepiformes Duffichthys Durialepis Glyptolepis Hamodus Heimenia Holoptychius Laccognathus Porolepis Pseudosauripterus Quebecius Ventalepis Dipnoi †Ctenodus †Conchopoma †Diabolepis †Dianodipterus †Eoctenodus †Gosfordia †Ichnomylax †Iranorhynchus †Isityumzi †Janvierpaucidentes †Megapleuron †Oervigia †Orlovichthys †Proceratodus †Rhinodipterus †Sagenodus †Straitonia †Tarachomylax †Tranodis †Westollrhynchus †Youngolepis †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

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