The Geology of Sussex; Or, the Geology and Fossils of the Tertiary and Cretaceous Formations of Sussex

The Geology of Sussex; Or, the Geology and Fossils of the Tertiary and Cretaceous Formations of Sussex

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1878 edition. Excerpt: ...conical or subfusiform, longitudinally and transversely striated, hence imperfectly granulated; upper edges of the whorls prominent, bordered with obscure tubercles. Width 2, length 5. By seven or eight transverse striae and numerous lines of growth, the surface is irregularly divided into rows of flattened tubercles, the upper of which is the largest and forms a kind of margin to the whorls. This species is rather obscurely maiked, in consequence of the specimens being in a bad state of preservation and having their surfaces worn. Cerithium semicoronatum, C. semigranulosum, C. muricoides, and C. unisulcatum are in Mr. Edwards's Cabinet. Cerithium nudum, C. variabile, and C. emarginatum have also been found at Bracklesham. Pleurotoma amphiconus. PI. VIII 9, figs. 7 & 8. Spec. Char.--Doubly conical, smooth, with a few striae round the base, and about three stria; near the upper part of each whorl; spire and aperture of equal length. Width 2, length 5, in proportion. More common than P. prisca, from which it differs in the equality of the two cones of which it is formed. Pleurotoma curvicosta. PI. V1J 8, fig. 17. Borsonia Biarritzana, Rouault; Edwards, 'Monogr. Eocene Univ.' p. 327. Spec. Char.--Fusiform, rather short, transversely striated, longitudinally ribbed or waved; ribs few, curved, thickened upwards; aperture elongated; beak short, straight. Twice as long as wide. A species of Pleurotoma which connects that genus with Fusus, with which indeed I have sometimes placed it. Pleurotoma inarata. PI. VI 7, fig. 21. Spec. Char.--Fusiform, elongated, transversely striated; whorls convex, with the upper edge extended and crenulated; striae numerous, the spaces between them nearly smooth; aperture short-oval, with an elongated, very...
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  • Paperback | 234 pages
  • 189 x 246 x 12mm | 426g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123656944X
  • 9781236569448