Sphyraena bolcensis

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Sphyraena bolcensis
Temporal range: Early Eocene
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Sphyraena bolcensis 34.JPG
Fossil specimen, Museo di Arsago Seprio
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Carangiformes
Suborder: Centropomoidei
Family: Sphyraenidae
Genus: Sphyraena
Species:
S. bolcensis
Binomial name
Sphyraena bolcensis
Agassiz, 1835
Synonyms
  • S. gracilisAgassiz, 1843

Sphyraena bolcensis is an extinct species of prehistoric barracuda known from the Eocene. It is known from the late Ypresian-aged Monte Bolca site of Italy. [1] [2]

Contents

Taxonomy

It is one of the earliest and best-known fossil barracudas. [3] It was initially described by Volta (1796) as a fossil specimen of the modern Sphyraena sphyraena , before Agassiz (1835) moved it to its own species, where it has since remained. [4] More recent studies suggest that it appears to predate the evolutionary radiation of crown group Sphyraena , and thus likely represents a stem-group barracuda. Despite being classified in the extant genus Sphyraena, its phylogenetic affinities have never been properly studied, and it thus may not necessarily be a true member of the genus, especially given it predating the modern barracuda radiation. [3]

Description

Close-up of S. bolcensis dentition, Museo dei Fossili di Bolca Sphyraena bolcensis dentition.JPG
Close-up of S. bolcensis dentition, Museo dei Fossili di Bolca

It could grow as long as nearly 1 metre (3.3 ft), though most specimens tend to range between 0.27 metres (0.89 ft) and 0.36 metres (1.2 ft). [4]

Ecology

A fossil specimen of the extinct shark Galeorhinus cuvieri has the partially-preserved remains of an S. bolcensis in its stomach. This is reminiscent of the preference of its modern relative, the school shark (G. galeus), for also preying on barracudas, suggesting that this predator-prey relationship has lasted nearly 50 million years. [5]

Related Research Articles

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<span class="mw-page-title-main">School shark</span> Species of shark

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<i>Pycnodus</i> Extinct genus of fishes

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<i>Ceratoichthys</i> Extinct species of fish

Ceratoichthys is an extinct genus of lookdown-like prehistoric jackfish that lived during the late Ypresian epoch, of the Early Eocene. It contains a single species, C. pinnatiformis of Monte Bolca, Italy. It and Vomeropsis are the only known members of the extinct subfamily Vomeropsinae.

<i>Eoplectus</i> Extinct genus of fishes

Eoplectus is an extinct genus of prehistoric marine tetraodontiform fish that lived during the Eocene. It contains a single species, E. bloti from the Early Eocene-aged Monte Bolca site of Italy. It is the only member of the family Eoplectidae. It closely resembled pufferfishes and porcupinefishes, which it was related to.

<i>Eoaulostomus</i> Extinct genus of fishes

Eoaulostomus is an extinct genus of marine ray-finned fish, closely related to the modern trumpetfish, that lived during the Eocene. It contains two species, E. bolcensis(de Blainville, 1818) and E. gracilisBlot, 1981, both known from the Early Eocene-aged Monte Bolca site of Italy.

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<i>Eoholocentrum</i> Extinct genus of fishes

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<i>Bolcyrus</i> Extinct genus of prehistoric marine eel

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Eoanguilla is an extinct genus of prehistoric marine eel that lived during the early Eocene. It contains a single species, E. leptoptera from the Ypresian-aged Monte Bolca site of Italy. It is thought to have been an early marine relative of the modern freshwater eels.

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<i>Eogaleus</i> Genus of extinct requiem shark

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<i>Galeorhinus cuvieri</i> Extinct species of shark

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References

  1. "PBDB Taxon". paleobiodb.org. Retrieved 2025-01-22.
  2. 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.
  3. 1 2 Santini, F.; Carnevale, G.; Sorenson, L. (2015-01-02). "First timetree of Sphyraenidae (Percomorpha) reveals a Middle Eocene crown age and an Oligo–Miocene radiation of barracudas". Italian Journal of Zoology. 82 (1): 133–142. doi:10.1080/11250003.2014.962630. ISSN   1125-0003.
  4. 1 2 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. Fanti, Federico; Minelli, Daniela; Larocca Conte, Gabriele; Miyashita, Tetsuto (2016-04-01). "An exceptionally preserved Eocene shark and the rise of modern predator–prey interactions in the coral reef food web". Zoological Letters. 2 (1): 9. doi: 10.1186/s40851-016-0045-4 . ISSN   2056-306X. PMC   4818435 . PMID   27042332.