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The hagfishes include a uniform staff of a few 60 species inhabiting the cool or deep components of the oceans of either hemispheres. they're thought of the main primitive representatives of the gang of craniate chordates, which - except the hagfishes that convey no lines of verteĀ­ brae -includes all vertebrate animals. therefore the hagfishes have performed and nonetheless playa principal function in discussions in regards to the evolution of the vertebrates. even if many of the specialise in hagfishes could be the results of their being primitive, it's going to no longer be forgotten that, while, they're really good animals with a special lifestyle that's attention-grabbing in its personal correct. it really is now greater than 30 years because a entire treatise on hagfishes used to be released. The Biology of Myxine, edited by way of Alf Brodal and Ragnar Fange (Universitetsforlaget, Oslo, 1963), supplied a wealth of knowledge at the biology of hagfishes, and through the years remained a huge resource of data and concept to scholars of hagfishes.

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