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Amphibia and Reptiles Volume 8 (Paperback) Loot Price: R695 Discovery Miles 6 950
Amphibia and Reptiles Volume 8 (Paperback): Hans Gadow
Amphibia and Reptiles Volume 8 (Paperback): Hans Gadow

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Amphibia and Reptiles Volume 8 (Paperback)

Hans Gadow

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Loot Price R695 Discovery Miles 6 950

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 Excerpt: ...e.g. Platemys and Chelys, however, all the parts of the atlas co-ossify and form a complete, solid vertebra which articulates by a concavo-convex joint with the centrum of the second vertebra. The normal number of cervical vertebrae is eight in all Chelonians. The first spinal nerve issues between occiput and atlas, all the others behind the neural arches of their vertebrae. The Ust, or eighth cerThe second basi-vical, owing to the retractility of the neck. ventral (white) is attached, ., ., ., r...., to the posterior end of the forms elaborate joints; its centre fits with first centrum, which, not a knob into a cup of the ninth, and its being fused with the second, - j i centrum, is not yet an post-zygapophyses form broad, curved odontoid process. 2, The articulating concave facets for the receii complete atlas of an adult., gangtiicus, still tion ot the anterior zygapophyses ot the typically temnospoudylous. fixcd uintl vertebra. In the Trionychidae: , The hrst and second cer-vertebrae of an adult the zygapophyses are most elaborate, and.The i complete they alone articulate wjth the llilltll atlas of a Clielys fimbrtata.." tebra, while tlie centra do not join, but remain, or rather become, separated by partial resorption. In the Chelonidae, in conformity with the non-retractile and short neck, all the cervical joints are much reduced. The skull (cf. Fig. 54, H, I, K, p. 280) agrees fundamentally with that of Sphenodon and of the Crocodilia, but it is characterised by several special features. There are no ectopterygoids or ossa transversa; no lacrymal bones, no interparietal or pineal foramen; the vomer is unpaired and the nasal bones are mostly absent, unless they are fused with the prefrontals. The premaxillae are very small. The single vomer fo...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: May 2012
First published: May 2012
Authors: Hans Gadow
Dimensions: 246 x 189 x 12mm (L x W x T)
Format: Paperback - Trade
Pages: 220
ISBN-13: 978-1-236-41053-5
Barcode: 9781236410535
Categories: Books > Science & Mathematics > Science: general issues
Books > Science & Mathematics > Science: general issues > General
LSN: 1-236-41053-X

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