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Galeocerdo

Genus of sharks

Summary

Genus of sharks

Galeocerdo is a genus of ground shark. Only a single species, G. cuvier, the tiger shark, is extant. The earliest fossils date back to the early Eocene epoch, (Ypresian), around 56–47.8 Million years ago. While historically considered a member of the requiem shark family Carcharhinidae, it is currently considered to be the only member of the family Galeocerdonidae. While this genus was historically considered diverse, including 21 extinct species, morphometric analysis conducted in 2021 suggested that the diversity of the genus included only 5 extinct species (including the Eocene †G. clarkensis and †G. eaglesomei, Oligocene-late Miocene †G. aduncus, Miocene †G. mayumbensis, and Pliocene †G. capellinii) much lower than previously assumed. The oldest fossils of the extant G. cuvier date to the middle Miocene.

Species

Species historically considered valid in the genus Galeocerdo include:

†Galeocerdo aduncus
†Galeocerdo alabamensis
†Galeocerdo clarkensis
Galeocerdo cuvier
†Galeocerdo denticulatus
†Galeocerdo eaglesomi
†Galeocerdo gibberulus
†Galeocerdo latidens
†Galeocerdo mayumbensis
†Galeocerdo minor
†Galeocerdo mixtus
†Galeocerdo productus

References

"iNaturalist.org.".
(November 2021). "Evolution, diversity, and disparity of the tiger shark lineage Galeocerdo in deep time". Paleobiology.
Pollerspöck, J.; Straube, N. Bibliography Database of Living/Fossil Sharks, Rays and Chimaeras (Chondrichtyes: Elasmobranchii, Holocephali)—List of Valid Extant Species; List of Described Extant Species; Statistic, World Wide Web Electronic Publication, Version 10/2021; ISSN: 2195-6499. Available online: www.shark-references.com (accessed on 23 November 2021).
"Fossilworks: Galeocerdo".
"Shark Teeth - Galeocerdo mayumbensis Fossils".

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

galeocerdo shark-genera taxa-named-by-johannes-peter-müller taxa-named-by-friedrich-gustav-jakob-henle fish-genera-with-one-living-species

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