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Bluntnose sixgill shark
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The bluntnose sixgill shark, often simply called the cow shark, is the largest hexanchoid shark, growing to 20 ft (6.1 m) in length. It is found in tropical and temperate waters worldwide and its diet is widely varied by region.
Bluntnose sixgill shark
Bluntnose sixgill shark
1877 drawing of the bluntnose sixgill shark
1877 drawing of the bluntnose sixgill shark
The Bluntnose sixgill shark is one of four shark species that have six gill pairs. Other three are - Frilled shark (Chlamydoselachus anguineus), Bigey
The Bluntnose sixgill shark is one of four shark species that have six gill pairs. Other three are - Frilled shark (Chlamydoselachus anguineus), Bigeyed sixgill shark (Hexanchus nakamurai)) and Atlantic sixgill shark (Hexanchus vitulus)
Jaws, male
Jaws, male
Hexanchiformes
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The Hexanchiformes are a primitive order of sharks, numbering just seven extant species in two families. Fossil sharks that were apparently very similar to modern sevengill species are known from Jurassic specimens.
Image: Notorynchus cepedianus head 3
Image: Notorynchus cepedianus head 3
Image: Chlamydoselachus anguineus 2
Image: Chlamydoselachus anguineus 2
Notidanodon sp. fossil at the Geological Museum, Copenhagen
Notidanodon sp. fossil at the Geological Museum, Copenhagen
Image: Paraorthacodus jurensis
Image: Paraorthacodus jurensis