Galeocerdo
Template:Short description Template:Automatic taxobox
Galeocerdo is a genus of ground shark. Only a single species, G. cuvier, the tiger shark, is extant.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The earliest fossils date back to the early Eocene epoch, (Ypresian), around 56–47.8 Million years ago.<ref name=":0">Template:Cite journal</ref> While historically considered a member of the requiem shark family Carcharhinidae, it is currently considered to be the only member of the family Galeocerdonidae.<ref>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).</ref> 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.<ref name=":0" />
SpeciesEdit
Species historically considered valid in the genus Galeocerdo include:<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
- †Galeocerdo aduncus
- †Galeocerdo alabamensis
- †Galeocerdo clarkensis
- Galeocerdo cuvier
- †Galeocerdo denticulatus
- †Galeocerdo eaglesomi
- †Galeocerdo gibberulus
- †Galeocerdo latidens
- †Galeocerdo mayumbensis<ref>{{#invoke:citation/CS1|citation
|CitationClass=web }}</ref>