Download PDF by Milan Klima: Development of the Cetacean Nasal Skull (Advances in

By Milan Klima

ISBN-10: 3540649964

ISBN-13: 9783540649960

Morphogeny of the nasal cranium used to be investigated in ninety two embryos of thirteen species of Cetacea. in comparison to the unique nasal pill of land mammals, the nasal constructions of Cetacea express many weighty changes. hence, the nostrils are translocated from the top of the snout to the vertex of the top. a number of buildings of the embryonic nasal cranium stay preserved even in grownup cetaceans. The translocation of the nostrils to the top element of the surfacing physique is one of the such a lot ideal variations of cetaceans to the aquatic lifestyles conduct. The morphogeny of the nasal cranium means that all cetaceans are of universal starting place and shape a unmarried monophyletic order. The hitherto traditional department of this order into suborders, Mysticeti and Odontoceti, seems to be unsubstantiated. particularly, a minimum of 3 heavily similar superfamilies will be unique in the order Cetacea, viz., Balaenopteroidea, Physeteroidea, and Delphinoidea. the consequences are in a

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Development of the Cetacean Nasal Skull (Advances in Anatomy, Embryology and Cell Biology) by Milan Klima

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