Caucasochasma Temporal range: | |
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Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Chondrichthyes |
Subclass: | Elasmobranchii |
Subdivision: | Selachimorpha |
Order: | Lamniformes |
Family: | Cetorhinidae |
Genus: | † Caucasochasma Prokofiev & Sychevskaya, 2018 [1] |
Species: | †C. zherikhini |
Binomial name | |
†Caucasochasma zherikhini Prokofiev & Sychevskaya, 2018 | |
Caucasochasma is an extinct genus of basking sharks that lived during the Oligocene. It contains one species, C. zherikhini. It is known from a mostly-complete skeleton from the Pshekha Formation of Russia. It has a body plan more similar to sand sharks than to extant basking sharks, which indicates that it was a benthic filter feeder. [1]
The Cenozoic is Earth's current geological era, representing the last 66 million years of Earth's history. It is characterized by the dominance of mammals, birds, conifers, and angiosperms. It is the latest of three geological eras, preceded by the Mesozoic and Paleozoic. The Cenozoic started with the Cretaceous–Paleogene extinction event, when many species, including the non-avian dinosaurs, became extinct in an event attributed by most experts to the impact of a large asteroid or other celestial body, the Chicxulub impactor.
The megamouth shark is a species of deepwater shark. Rarely seen by humans, it measures around 5.2 m (17 ft) long and is the smallest of the three extant filter-feeding sharks alongside the relatively larger whale shark and basking shark. According to Sharkman's World Organization a total of 286 specimens have been observed or caught since its discovery in 1976, Like the other two planktivorous sharks, it swims with its mouth wide open, filtering water for plankton and jellyfish. It is recognizable from its large head with rubbery lips. The megamouth is so unlike any other type of shark that it is usually considered to be the sole extant species in the family Megachasmidae, though some scientists have suggested it may belong in the family Cetorhinidae.
The basking shark is the second-largest living shark and fish, after the whale shark. It is one of three plankton-eating shark species, along with the whale shark and megamouth shark. Typically, basking sharks reach 7.9 m (26 ft) in length. It is usually greyish-brown, with mottled skin, with the inside of the mouth being white in colour. The caudal fin has a strong lateral keel and a crescent shape. Other common names include bone shark, elephant shark, sailfish, and sunfish. In Orkney, it is called hoe-mother, meaning "the mother of the picked dogfish".
Cetorhinidae is a family of filter feeding mackerel sharks, whose members are commonly known as basking sharks. It includes the extant basking shark, Cetorhinus, as well as two extinct genera, Caucasochasma and Keasius.
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Otodus angustidens is an extinct species of prehistoric megatoothed sharks in the genus Otodus, which lived during the Oligocene and Miocene epochs about 33 to 22 million years ago. The largest individuals were about 11–12 metres (36–39 ft) long. This shark is related to another extinct megatoothed shark, the famous Otodus megalodon.
Basking may refer to:
Basking Sharks were a synthesiser band that formed in 1980 in Lancaster becoming a significant member of the scene in the city and going on to tour in the wider UK. Their music merged power pop with European influences and experimentation and they were notable example of British Indie Synth Pop. Members were Adrian Todd, Ged McPhail and Martyn Eames who used a variety of home-made electronic instruments supplemented by second hand synths that had been customised to provide unique sounds. On stage they always played “live” without the use of backing tracks and their stage act included a slide show, films and computer visuals synced into the stage performance. They produced a single, an EP and an LP, numerous videos, and live recordings. They supported John Peel at a Lancaster gig which prompted him to invite them to record at Maida Vale for his radio show. In 1987 they separated to pursue different projects. Adrian and Martyn formed the industrial technical band Degree 33. Ged moved to Newcastle upon Tyne joining Madam X. Today Adrian and Martyn are working on a new project encompassing old and new technology with a view to live performance and internet release. Ged is developing a recording studio in South Korea. Basking Sharks are still a performing unit but play rarely. A 'best of' CD, Back from the Deep Water was self-released as a CD in 2004 and then re-released in 2019 as an LP and digital download by the Mental Experience label of the Guerssen record label group. A "Basking Sharks" craft beer directly named after the group is also brewed in tribute to them by the Accidental Brewery in Lancaster that now occupies the band's former rehearsal space.
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Keasius is an extinct genus of basking sharks that lived during the Cenozoic. It contains four valid species, which have been found in North America, Europe, and Antarctica.