Coelogaster is an extinct genus of marine ray-finned fish that lived during the early Eocene. It contains a single species, C. leptostea, known from the famous Monte Bolca site of Italy.[1][2]

Coelogaster
Temporal range: Early Eocene[1]
Fossil specimen
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Gonorynchiformes
Family: Chanidae (?)
Genus: Coelogaster
Eastman, 1905
Species:
C. leptostea
Binomial name
Coelogaster leptostea
(Eastman, 1905)
Synonyms
  • Chanoides leptostea Eastman, 1905
  • Coelogaster analis Eastman, 1905 ex Agassiz, 1835
  • Eucoelogaster White & Moy-Thomas, 1940

It is classified in the Anotophysi, and is generally considered a chanid of uncertain affinities, making it related to modern milkfish.[3][4][5][6]

It was initially named without formal description by Louis Agassiz in 1835 as Clupea leptostea, alongside another fish known as Coelogaster analis. In 1905, Eastman officially described C. analis based on Agassiz's original name, and also described Clupea leptostea under the new genus Chanoides. A later revision found both these taxa to be synonymous, leading to the new combination Coelogaster leptostea.[5][7]

White & Moy-Thomas (1940) suggested the genus name Eucoelogaster as a replacement,[2] as the previous genus name Coelogaster was already preoccupied by a weevil genus, but most authorities have since kept Coelogaster as the genus name, with the weevil genus instead going by Dietzella.

References

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  1. ^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2009-02-20. Retrieved 2009-02-27.
  2. ^ a b "PBDB Taxon". paleobiodb.org. Retrieved 2024-05-25.
  3. ^ Taverne, Emmanuel Fara, Mireille Gayet, Louis (2010), "The Fossil Record of Gonorynchiformes", Gonorynchiformes and Ostariophysan Relationships, CRC Press, doi:10.1201/b10194-6/fossil-record-gonorynchiformes-emmanuel-fara-mireille-gayet-louis-taverne, ISBN 978-0-429-06156-1, retrieved 2024-05-09{{citation}}: CS1 maint: multiple names: authors list (link)
  4. ^ Carnevale, G.; Bannikov, Alexandre F.; Marramà, G.; Tyler, James C.; Zorzin., R. (2014). "The Bolca Fossil-Lagerstätte: A window into the Eocene World. 5. The Pesciara- Monte Postale Fossil-Lagerstätte: 2. Fishes and other vertebrates. Excursion guide" (PDF). Rendiconti della Società Paleontologica Italiana. 4 (1): i–xxvii. hdl:10088/25678.
  5. ^ a b Patterson, Colin (1984). "Chanoides , a marine Eocene otophysan fish (Teleostei: Ostariophysi)". Journal of Vertebrate Paleontology. 4 (3): 430–456. doi:10.1080/02724634.1984.10012021. ISSN 0272-4634.
  6. ^ Murray, Alison M.; Brinkman, Donald B.; Friedman, Matt; Krause, David W. (2023-10-17). "A large, freshwater chanid fish (Ostariophysi: Gonorynchiformes) from the Upper Cretaceous of Madagascar". Journal of Vertebrate Paleontology. doi:10.1080/02724634.2023.2255630. ISSN 0272-4634.
  7. ^ Marramà, Giuseppe; Carnevale, Giorgio (2014). "Eocene round herring (Teleostei: Clupeidae) from Monte Bolca, Italy". Acta Palaeontologica Polonica. doi:10.4202/app.00057.2014. hdl:2318/1525495. ISSN 0567-7920.