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The Structure and Relationships of the Primitive Devonian Lungfish, Dipnorhynchus Sussmilchi (Etheridge) (Classic Reprint) - Brossura
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Excerpt from The Structure and Relationships of the Primitive Devonian Lungfish, Dipnorhynchus Sussmilchi (Etheridge)
In 1936 Hills described the external dermal bones of a mandible from Buchan, Victoria, as a probable representative of Dipnorhynchus. A large part of the ex ternal surface had been lost before it came to the National Museum, Melbourne, where it is now housed (p However, interpretation was possible because an impression of the radiating structure of the internal surfaces of the dermal bones had been left on the matrix filling the Meckelian vacuity. Permission was obtained from E. D. Gill, Deputy Director of the National Museum, to prepare this speci men by acid etching after the above-mentioned structures had been recorded in plaster casts. Not only were the internal elements of the mandible found to be almost complete and uncrushed, but the cavities of the jaw contained a large cheek plate (p is837a, National Museum), several scales (p i38s7e-f), and a portion of the branchial apparatus (p 13837g). Neither the exact locality nor horizon of this specimen is known. Attempts to identify the horizon by recovering microfossils from the acid residues were unsuccessful.
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The Structure and Relationships of the Primitive Devonian Lungfish
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Paperback. Condizione: New. Print on Demand. This book details the structure and relationships of Dipnorhynchus sussmilchi, a primitive lungfish from the early Devonian period, based on the examination of acid-prepared, uncrushed specimens. Dipnorhynchus sussmilchi bore many similarities to the Crossopterygii, a group of fish from which scientists believe terrestrial vertebrates ultimately evolved. Biological and anatomical descriptions of the skull roof, jaw structure, and various scales of the Dipnorhynchus sussmilchi are included in the book, along with comparative analyses of other Paleozoic lungfish such as Dipterus and Melanognathus. The discoveries presented within this book provide key insights into the evolutionary history of lungfish and their significance in the evolution of terrestrial vertebrates. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9781528023764_0
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The Structure and Relationships of the Primitive Devonian Lungfish, Dipnorhynchus Sussmilchi (Etheridge) (Classic Reprint)
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LX-9781528023764
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The Structure and Relationships of the Primitive Devonian Lungfish, Dipnorhynchus Sussmilchi (Etheridge) (Classic Reprint)
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LX-9781528023764
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