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Engel, Stefan
(detail)
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1959a |
Rudimentary mammalian lungs.
Gegenbaurs Morph. Jahrb. 100: 95-114. 19 figs.
–The alveolar structure of the dugong lung is compared with those of crocodilians and monotremes; concludes that the dugong's structure is the most primitive among living mammals (102-104, 106, 111-114).
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Engel, Stefan
(detail)
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1959b |
The respiratory tissue of dugong (Halicore Dugong).
Anat. Anz. 106: 90-100. 14 figs.
–Reports that the lung tissue consists only of small, poorly differentiated vesicles, not of acini; these arise laterally from bronchioli. This is considered unique and perhaps primitive among mammals.
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Engel, Stefan
(detail)
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1962 |
The air-passages of the dugong lung.
Acta Anat. 48(1-2): 95-107. 17 figs.
–Describes the histology and microscopic anatomy of the air-conducting tubules, which differ in arrangement from the typical mammalian bronchial tree.
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Daryl P. Domning, Research Associate, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, and Laboratory of Evolutionary Biology, Department of Anatomy, College of Medicine, Howard University, Washington, D.C. 20059.
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