The Miocene Gastropod Fauna of Maryland

The Miocene Gastropod Fauna of Maryland

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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. 1904 edition. Excerpt: ...and plain; right lip toothed within, and plicated on the margin; beak recurved. The striae in general are alternately larger and smaller." Conrad, 1830. Length, 42 mm.; diameter, 24 mm. ()ccun'8nce.--ST. MaRY's FORMATION. St. Mary's River, Langley's Blutl'. Collections.--Maryland Geological Survey, Johns Hopkins University, Philadelphia Academy of Natural Sciences, Cornell University, U. S. National Museum. Family PURPURID/E. Genus ECPHORA Conrad. Ecphora Conrad, 1843, Proc. Acad. Nat. Sci. Phila., vol. i, p. 310. 1 Stenomphalus Sandberger, 1853. E'..phora Conrad, 1866, Amer. Jour. Conch., vol. ii, p. 75. Repana Tryon, 1882, Manual of Conchology, vol. ii, p. 202. (ln part.) Slenomphalus Zlttei,1885, Handbnch der Paleontologie, Abth. 19, p. 270. (In part.) If'tpana Fischer, 1887, Manuel de Conchyllologie, p. 644. (In part.) Ecphora Dali, 1890, Trans. Wagner Free lust. Sci., vol. iii, pt. i, p. 124. Rapana Cossmann, 1903, Essais de Paieoconch. Comp., vol. v, p. 63. Careful study of large collections of material from the entire Atlantic slope has shown that this genus, formerly considered as most constant in its characteristics and most easy to recognize, should really be divided into several distinct species, the generic position of some of which are not at first sight apparent. The difficulty encountered in assigning these forms to a satisfactory generic position can be seen from the great diversity of opinion already recorded in the synonomy of the genus itself and in that of the several species. This diversity of opinion becomes more evident when one notes the diflerent positions assigned to the various genera in which the species have been included. The recognition of tam paiinslls as a...
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Product details

  • Paperback | 56 pages
  • 189 x 246 x 3mm | 118g
  • United States
  • English
  • black & white illustrations
  • 1236886054
  • 9781236886057