Proceedings of the California Academy of Sciences 4

Cover Proceedings of the California Academy of Sciences 4
Proceedings of the California Academy of Sciences 4
California Academy of Sciences
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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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