New PDF release: Development of the Cetacean Nasal Skull (Advances in

By Milan Klima

ISBN-10: 3540649964

ISBN-13: 9783540649960

Morphogeny of the nasal cranium was once 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 ameliorations. therefore, the nostrils are translocated from the top of the snout to the vertex of the pinnacle. a number of constructions 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 likely one of the so much excellent diversifications of cetaceans to the aquatic existence conduct. The morphogeny of the nasal cranium means that all cetaceans are of universal starting place and shape a unmarried monophyletic order. The hitherto ordinary department of this order into suborders, Mysticeti and Odontoceti, seems to be unsubstantiated. fairly, no less than 3 heavily similar superfamilies could be distinctive in the order Cetacea, viz., Balaenopteroidea, Physeteroidea, and Delphinoidea. the implications 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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