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Titlebook: Development of the Cetacean Nasal Skull; M. Klima Book 1999 The Editor(s) (if applicable) and The Author(s), under exclusive license to Sp

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書目名稱Development of the Cetacean Nasal Skull
編輯M. Klima
視頻videohttp://file.papertrans.cn/271/270029/270029.mp4
叢書名稱Advances in Anatomy, Embryology and Cell Biology
圖書封面Titlebook: Development of the Cetacean Nasal Skull;  M. Klima Book 1999 The Editor(s) (if applicable) and The Author(s), under exclusive license to Sp
描述Morphogeny of the nasal skull was investigated in 92 embryos of 13 species of Cetacea. Compared to the original nasal capsule of land mammals, the nasal structures of Cetacea show many weighty transformations. As a result, the nostrils are translocated from the tip of the snout to the vertex of the head. Several structures of the embryonic nasal skull remain preserved even in adult cetaceans. The translocation of the nostrils to the highest point of the surfacing body is among the most perfect adaptations of cetaceans to the aquatic life habits. The morphogeny of the nasal skull suggests that all cetaceans are of common origin and form a single monophyletic order. The hitherto usual division of this order into two suborders, Mysticeti and Odontoceti, appears to be unsubstantiated. Rather, at least three closely related superfamilies should be distinguished within the order Cetacea, viz., Balaenopteroidea, Physeteroidea, and Delphinoidea. The results are in a
出版日期Book 1999
關(guān)鍵詞aquatic mammals; development; mysticeti; odonoceti; wahle
版次1
doihttps://doi.org/10.1007/978-3-642-58612-5
isbn_softcover978-3-540-64996-0
isbn_ebook978-3-642-58612-5Series ISSN 0301-5556 Series E-ISSN 2192-7065
issn_series 0301-5556
copyrightThe Editor(s) (if applicable) and The Author(s), under exclusive license to Springer-Verlag GmbH, DE
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https://doi.org/10.1007/978-3-7091-5043-6retation of the individual structures of the heavily transformed cetacean nasal skull. Examinations made at individual stages, however exact, for the most part do not permit the recognition of natural connections and often lead to pure speculation. Thus, it is no surprise that even the earliest know
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Das Brikettieren der Braunkohletissue either ossifies to form independent skull bones, or it becomes integrated into the bony tissue of the dermal bones, or it is dissolved and resorbed. These processes are readily understood if one realizes that most of the cartilaginous anlagen play only a transitory part during embryonic devel
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Grundzüge der Botanik für Pharmazeutenand mammals. These changes include (1) the loss of the sense of smell, (2) translocation of the nostrils from the tip of the rostrum to the vertex of the head, and (3) elongation of the anterior head to form a rostrum protruding far towards anterior. The morphogenetic processes taking place during e
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Development of the Cetacean Nasal Skull978-3-642-58612-5Series ISSN 0301-5556 Series E-ISSN 2192-7065
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