Galeocerdo Temporal range:
| |
---|---|
![]() | |
Galeocerdo cuvier | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Chondrichthyes |
Subclass: | Elasmobranchii |
Subdivision: | Selachimorpha |
Order: | Carcharhiniformes |
Family: | Galeocerdonidae |
Genus: |
Galeocerdo J. P. Müller & Henle, 1837 |
Type species | |
Galeocerdo cuvier | |
Species | |
See text |
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]
Species historically considered valid in the genus Galeocerdo include: [4]
Galeocerdo Temporal range:
| |
---|---|
![]() | |
Galeocerdo cuvier | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Chondrichthyes |
Subclass: | Elasmobranchii |
Subdivision: | Selachimorpha |
Order: | Carcharhiniformes |
Family: | Galeocerdonidae |
Genus: |
Galeocerdo J. P. Müller & Henle, 1837 |
Type species | |
Galeocerdo cuvier | |
Species | |
See text |
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]
Species historically considered valid in the genus Galeocerdo include: [4]