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Eotetraodon

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Eotetraodon
Temporal range: Late Ypresian to Bartonian[1]
Reconstruction of E. pygmaeus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Tetraodontiformes
Family: Tetraodontidae
Genus: Eotetraodon
Tyler, 1980
Type species
Tetraodon pygmaeus
de Zigno, 1887
Species
  • E. gornylutshensis Bannikov & Tyler, 2012
  • E. pygmaeus (de Zigno, 1887)
  • E. tavernei Tyler & Bannikov, 2012

Eotetraodon ("dawn Tetraodon") is an extinct genus of miniature prehistoric pufferfish that lived in Europe from the early to mid-late Eocene. It is the earliest pufferfish known from fossil remains.[1][2]

The following species are known:

As the name of the type species suggests, Eotetraodon was a very small fish that (depending on the species) reached only 17.5 to 20.1 millimetres (0.69 to 0.79 in). Despite this very small size, fossil specimens are fully ossified, suggesting that they are of adult individuals.[3]

Although generally considered an early pufferfish, some recent studies have placed it as part of an evolutionary grade, containing several other Bolca tetraodontiforms, leading to the threetooth puffer (Triodon), a different tetraodontiform fish.[6]

References

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  1. ^ a b 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.
  2. ^ "PBDB Taxon". paleobiodb.org. Retrieved 2025-02-14.
  3. ^ a b Bannikov, A. F.; Tyler, J. C. (2008). "A new species of the pufferfish Eotetraodon (Tetraodontiformes, Tetraodontidae) from the Eocene of the Northern Caucasus". Paleontological Journal. 42 (5): 526–530. Bibcode:2008PalJ...42..526B. doi:10.1134/S0031030108050080. S2CID 84830626.
  4. ^ Geology, British Museum (Natural History) Department of; Woodward, Arthur Smith (1901). Catalogue of the Fossil Fishes in the British Museum (Natural History): Actinopterygian Teleostomi of the suborders Isospondyli (in part), Ostariophysi, Apodes, Percesoces, Hemibranchii, Acanthopterygii, and Anacanthini. order of the Trustees.
  5. ^ Tyler, James C.; Bannikov, Alexandre F. (2012). "A NEW SPECIES OF PUFFER FISH, EOTETRAODON TAVERNEI, FROM THE EOCENE OF MONTE BOLCA, ITALY (TETRAODONTIDAE, TETRAODONTIFORMES)". Studi e Ricerche sui Giacimenti Terziari di Bolca (XIV).
  6. ^ Ridolfi, Lorenzo; Marramà, Giuseppe; Tyler, James; Carnevale, Giorgio (2025-01-31). "A NEW FOSSIL CLARIFIES THE ANATOMY AND PHYLOGENETIC RELATIONSHIPS OF THE EOCENE GYMNODONT FISH †ZIGNOICHTHYS OBLONGUS (ZIGNO, 1874)". RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA. 131 (1). doi:10.54103/2039-4942/23409. ISSN 2039-4942.