Petrificata Derbiensia Volume 1; Or, Figures and Descriptions of Petrifactions Collected in Derbyshire download pdf

Petrificata Derbiensia Volume 1; Or, Figures and Descriptions of Petrifactions Collected in Derbyshire. William Martin

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Author: William Martin
Number of Pages: 32 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130344547
File Name: Petrificata.Derbiensia.Volume.1;.Or,.Figures.and.Descriptions.of.Petrifactions.Collected.in.Derbyshire.pdf
Download Link: Petrificata Derbiensia Volume 1; Or, Figures and Descriptions of Petrifactions Collected in Derbyshire
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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. 1809 Excerpt: ... sinus, which is smooth and angular, instead of being rounded and striated, as in that species. A much less common fossil than the foregoing, with which, however, it is sometimes found. Our specimens were collected near Buxton. It rarely occurs in a perfect state; one or both of the corners, which the extended hinge forms with the sides, being for the most part broken. Fig. 2. Represents a specimen thus mutilated. PLATE 36, 37.--FIG. 3. CONCHYLIOLITHUS Anomites (lineatus) transversitn ovalis, decussatim striatus: striis longitudinalibus confertis subtilissimis; transversis remotioribus subelevatis majoribus, margine integro. S. p. A fossil shell. The original an Anomia. Perforate, with convex valves, transversely oval. The hinge straight and patulous, but short, not extending the breadth of the shell. Foramen triangular; between the beaks. The surface of both valves decussatedly striated; the longitudinal striae close, equal, and very minute, (scarcely visible without the assistance of a glass) the transverse broad, somewhat prominent, and more remote than the striae which they cross; but with respect to themselves, approximate, or divided only by a small space from each other. The beak of the larger valve incurved and pointed; that of the smaller also pointed; and, though shorter than the other beak, more prominent than in most other Anomita of the same division. (See Syst. Gen. 6. d. Anomita d. d.) The margin is entire, having no indentations of any kind, except a very minute, and, in some specimens, scarcely perceptible, sinus, which does not in any degree affect the uniform convexity of the valves. Common in limestone, particularly near Castleton. FIG. 4. CONCHYLIOLITHUS Anomites (Crumena) scro-tiformis, sulcis longitudinalibus subobsolescentibus, margi...

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