Palaeontology volume 1
Palaeontology volume 1
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In our eReader you can find the full English version of the book. Read Palaeontology volume 1 Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Palaeontology volume 1
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R. Report, vol. 5, p. 822, pi. 2, fig. 11. ) SHELL fusiform, veutricose ; spire barely as long as the mouth ; whorls seven, rounded, the Upper ones longitudinally ribbed; these ribs becoming obsolete with age, and entirely absent on the last whorl. Suture impressed. Mouth narrow in advance; canal slightly curved. Surface^ in addition to the longitudinal 86 PALEONTOLOGY OF CALIFORNIA.
ribs, crossed by numerous fine revolving ribs, somctim&s showing a tendency to alternation in size, especially o...n the anterior part of the shell.
This shell docs not appear ever to attain so large a size as cither of the preced ing species.
Figures, natural size, and magnified.
Localities: Clayton; Cochran's, near Mount Diablo; and Alizos Creek, near Fort Tejon.
SUBGEN. HEMIFUSUS, Swains. F. (H. ) HORNII, n. S.
PI. 28, Fig. 206, and 206 a, SHELL unequally fusiform; spire low, tapering concavely. Whorls six, the last bi- or tricarinate; the others with one rounded carina, except the one or two forming the extreme apex, which are rounded, smooth, and without markings.
What to read after Palaeontology volume 1?
You can find similar books in the "Read Also" column, or choose other free books by Geological Survey of California to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
R. Report, vol. 5, p. 822, pi. 2, fig. 11. ) SHELL fusiform, veutricose ; spire barely as long as the mouth ; whorls seven, rounded, the Upper ones longitudinally ribbed; these ribs becoming obsolete with age, and entirely absent on the last whorl. Suture impressed. Mouth narrow in advance; canal slightly curved. Surface^ in addition to the longitudinal 86 PALEONTOLOGY OF CALIFORNIA.
ribs, crossed by numerous fine revolving ribs, somctim&s showing a tendency to alternation in size, especially o...n the anterior part of the shell.
This shell docs not appear ever to attain so large a size as cither of the preced ing species.
Figures, natural size, and magnified.
Localities: Clayton; Cochran's, near Mount Diablo; and Alizos Creek, near Fort Tejon.
SUBGEN. HEMIFUSUS, Swains. F. (H. ) HORNII, n. S.
PI. 28, Fig. 206, and 206 a, SHELL unequally fusiform; spire low, tapering concavely. Whorls six, the last bi- or tricarinate; the others with one rounded carina, except the one or two forming the extreme apex, which are rounded, smooth, and without markings.
What to read after Palaeontology volume 1?
You can find similar books in the "Read Also" column, or choose other free books by Geological Survey of California to read onlineMoreLess
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