Proceedings of the California Academy of Sciences 4
Proceedings of the California Academy of Sciences 4
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Type:— No. 209, and cotype No. 210, Cal. Acad. Sci., Oli- gocene(?) (or Miocene) of Columbia County, Oregon, two and one-half miles southwest of Clatskanie.
Genus TURRIS Bolten Turris lincolnensis, new species Plate 6, figure 8.
Shell large, fusiform, with seven or eight whorls ; spire high, with an acute apex; whorls of the spire obtusely angulated a little anterior to the middle, nearly flat above and below, slightly concave near the suture; ornamentation consisting of prom- inent nodes and f...ine spiral threads separated by wider inter- spaces carrying fine intercalary lines, fifteen nodes and about twenty-four major spiral threads on the penultimate whorl; suture distinct, appressed; body-whorl ventricose, ornamented with a row of nodes a little above the middle producing a slight angular appearance, convex above and below, constricted at the suture; spiral sculpture similar to that of the whorls of the spire ; aperture oval, with a broad and shallow posterior sinus ; canal moderately long.
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To quickly assess the difficulty of the text, read a short excerpt:
Type:— No. 209, and cotype No. 210, Cal. Acad. Sci., Oli- gocene(?) (or Miocene) of Columbia County, Oregon, two and one-half miles southwest of Clatskanie.
Genus TURRIS Bolten Turris lincolnensis, new species Plate 6, figure 8.
Shell large, fusiform, with seven or eight whorls ; spire high, with an acute apex; whorls of the spire obtusely angulated a little anterior to the middle, nearly flat above and below, slightly concave near the suture; ornamentation consisting of prom- inent nodes and f...ine spiral threads separated by wider inter- spaces carrying fine intercalary lines, fifteen nodes and about twenty-four major spiral threads on the penultimate whorl; suture distinct, appressed; body-whorl ventricose, ornamented with a row of nodes a little above the middle producing a slight angular appearance, convex above and below, constricted at the suture; spiral sculpture similar to that of the whorls of the spire ; aperture oval, with a broad and shallow posterior sinus ; canal moderately long.
What to read after Proceedings of the California Academy of Sciences 4?
You can find similar books in the "Read Also" column, or choose other free books by California Academy of Sciences to read onlineMoreLess
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