Skull anatomy of the Oligocene toothed mysticeteAetioceus weltoni(Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
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Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy
Toothed mysticetes of the family Aetiocetidae from Oligocene rocks of the North Pacific play a key role in interpretations of cetacean evolution because they are transitional in grade between dorudontine archaeocetes and edentulous mysticetes. The holotype skull of Aetiocetus weltoni from the late Oligocene (28–24 Ma) of Oregon, USA, has been further prepared, revealing additional morphological...
متن کاملA bizarre new toothed mysticete (Cetacea) from Australia and the early evolution of baleen whales.
Extant baleen whales (Cetacea, Mysticeti) are all large filter-feeding marine mammals that lack teeth as adults, instead possessing baleen, and feed on small marine animals in bulk. The early evolution of these superlative mammals, and their unique feeding method, has hitherto remained enigmatic. Here, I report a new toothed mysticete from the Late Oligocene of Australia that is more archaic th...
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S and S. A. Rommel , eds ) , Vol. I , pp. 15 – 72 . Smithsonian Institution Press , Washington, DC . Pabst , D. A. , Rommel , S. A. , and McLellan , W. A. ( 1998 ). Evolution of thermoregulatory function in cetacean reproductive systems . In “ The Emergence of Whales ” ( H. Thewissen , ed. ) , pp. 379 – 397 . Plenum Press , New York, NY . Pierard, J. (1971). Osteology and myology of the Weddell...
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The head consists of the skull, face, scalp, teeth, brain, cranial nerves, meninges, special sense organs, and other structures such as blood vessels, lymphatics, and fat. It is also the site where food is ingested and air is inspired and expired (Fig. 101; Fig. 102). Diseases of important structures in the head form the bases of many medical, dental, and surgical specialties dentistry, maxillo...
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ژورنال
عنوان ژورنال: Zoological Journal of the Linnean Society
سال: 2008
ISSN: 0024-4082,1096-3642
DOI: 10.1111/j.1096-3642.2008.00414.x