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Galeocerdo
Genus of sharks From Wikipedia, the free encyclopedia
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Galeocerdo is a genus of ground shark. Only a single species, G. cuvier, the tiger shark, is extant.[1] The earliest fossils date back to the early Eocene epoch, (Ypresian), around 56–47.8 Million years ago.[2] While historically considered a member of the requiem shark family Carcharhinidae, it is currently considered to be the only member of the family Galeocerdonidae.[3] 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.[2]
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Species
Species historically considered valid in the genus Galeocerdo include:[4]
- †Galeocerdo aduncus
- †Galeocerdo alabamensis
- †Galeocerdo clarkensis
- Galeocerdo cuvier
- †Galeocerdo denticulatus
- †Galeocerdo eaglesomi
- †Galeocerdo gibberulus
- †Galeocerdo latidens
- †Galeocerdo mayumbensis[5]
- †Galeocerdo minor
- †Galeocerdo mixtus
- †Galeocerdo productus
References
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