Eoeugnathus

Eoeugnathus Temporal range: Anisian-Ladinian PreꞒ Ꞓ O S D C P T J K Pg N ↓
E. megalepis specimen, Milan Natural History Museum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Clade:	Halecomorphi
Order:	† Ionoscopiformes
Family:	† Subortichthyidae
Genus:	† Eoeugnathus Brough, 1939
Type species
†Eoeugnathus megalepis Brough, 1939
Species
E. bellottii(Rueppel, 1857) E. megalepisBrough, 1939

Eoeugnathus (Greek for "dawn true-jaw") is an extinct genus of prehistoric marine ray-finned fish belonging to the Halecomorphi. ^[1] Eoeugnathus existed during the Middle Triassic in what is now Europe. ^{[2] [3]}

E. belliotti specimen, Civico Museo Insubrico di Storia Naturale

It contains two species: ^{[4] [5]}

• E. bellottii(Rueppel, 1857) - Ladinian of Italy and Switzerland (Meride Formation, Perledo-Varenna Formation) (= Allolepidotus bellottiiRueppel, 1857) ^[5]
• E. megalepisBrough, 1939 (type species) - latest Anisian to late Ladinian of Italy (Besano Formation), Switzerland (Prosanto Formation), and Spain (Muschelkalk) ^[3]

It was initially placed in the Caturidae and then the Panxianichthyiformes, ^[6] but more recent studies have placed it in the new ionoscopiform family Subortichthyidae. ^{[5] [7]}

See also

• Paleontology portal
• Fish portal

• Prehistoric fish
• List of prehistoric bony fish

References

1. The Paleobiology Database Eoeugnathus entry
2. Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2011-07-23. Retrieved 2009-02-27.
3. Romano, Carlo; Koot, Martha B.; Kogan, Ilja; Brayard, Arnaud; Minikh, Alla V.; Brinkmann, Winand; Bucher, Hugo; Kriwet, Jürgen (2016). "Permian-Triassic Osteichthyes (bony fishes): diversity dynamics and body size evolution". Biological Reviews. 91 (1): 106–147. doi:10.1111/brv.12161. PMID   25431138. S2CID   5332637.
4. "PBDB Taxon". paleobiodb.org. Retrieved 2025-01-01.
5. López-Arbarello, Adriana; Brocke, Rainer (2024-08-19). "New generic name for a small Triassic ray-finned fish from Perledo (Italy)". Swiss Journal of Palaeontology. 143 (1): 30. Bibcode:2024SwJP..143...30L. doi: 10.1186/s13358-024-00325-6 . ISSN   1664-2384.
6. Zuoyu, Sun; Tintori, Andrea; Yaozhong, Xu; Lombardo, Cristina; Peigang, Ni; Dayong, Jiang (2017-03-04). "A new non-parasemionotiform order of the Halecomorphi (Neopterygii, Actinopterygii) from the Middle Triassic of Tethys" . Journal of Systematic Palaeontology. 15 (3): 223–240. Bibcode:2017JSPal..15..223Z. doi:10.1080/14772019.2016.1181679. ISSN   1477-2019.
7. FENG Dong-Hao, XU Guang-Hui (2023). Taxonomic revision of Sinoeugnathus kueichowensis(Halecomorphi, Holostei) from the Middle Triassic ofGuizhou and Yunnan, China.