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Galeocerdo Alabamensis
''Galeocerdo alabamensis'' is an extinct relative of the modern tiger shark. Nomenclature of this shark has been debated, and recent literature identified it more closely with the ''Physogaleus'' genus of prehistoric shark, rather than ''Galeocerdo''. The classification of ''Physogaleus'' is known as tiger-like sharks while ''Galeocerdo'' refers to tiger sharks. In 2003, P. ''alabamensis'' was classified as ''Galeocerdo''. However, in 2019 they were proclaimed to be more morphologically similar to the genus ''Physogaleus''. This definition was based primarily on tooth shape, as the majority of information on P. ''alabamensis'' is a result of studying tooth fossils. Distinctions between ''Physogaleus'' and ''Galeocerdo'' are difficult with extinct sharks from the Oilgocene/Miocene as there is little paleobiological information allowing for hard conclusions. Distribution Referred to in this article as P. ''alabamensis'', fossils have been recovered in the Southern United States, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiger Shark
The tiger shark (''Galeocerdo cuvier'') is a species of requiem shark and the last extant member of the family Galeocerdonidae. It is a large macropredator, capable of attaining a length over . Populations are found in many tropical and temperate waters, especially around central Pacific islands. Its name derives from the dark stripes down its body, which resemble a tiger's pattern, but fade as the shark matures. The tiger shark is a solitary, mostly nocturnal hunter. It is notable for having the widest food spectrum of all sharks, with a range of prey that includes crustaceans, fish, seals, birds, squid, turtles, sea snakes, dolphins, and even other smaller sharks. It also has a reputation as a "garbage eater", consuming a variety of inedible, man-made objects that linger in its stomach. Though apex predators, tiger sharks are sometimes taken as prey by groups of killer whales. It is considered a near threatened species because of finning and fishing by humans. The tiger s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physogaleus
''Physogaleus'' is a small genus of prehistoric shark that lived from the Eocene to Miocene epochs. Description ''Physogaleus'' are only known from their fossil teeth and isolated vertebra. It has teeth similar to the modern tiger shark, but smaller. Species of ''Physogaleus'' were originally described as being teeth of extinct tiger shark The tiger shark (''Galeocerdo cuvier'') is a species of requiem shark and the last extant member of the family Galeocerdonidae. It is a large macropredator, capable of attaining a length over . Populations are found in many tropical and tempera ... species in the genus ''Galeocerdo''. Recognition of numerous differences in tooth anatomies of these species with other species of ''Galeocerdo'' lead researchers to erect the genus ''Physogaleus''.Hernandez, C. 2015. Paleobiology of the Mio-Pliocene sharks, with emphasis on the extinct apex predator ''Carcharocles megalodon''. University of Florida. Unpublished Ph.D. Dissertation ''Physogaleus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
