. Geological magazine. (oh t^. Mintern Bros. imp. Oxfordian L Lower Oolite Gasteropoda. (Ybrksliire) THE GEOLOGICAL MAGAZINE. NEW SERIES. DECADE III. VOL. I. No. VI.—JUNE, I.—Contributions to the PALiEONTOLOGY of the Toekshike Oolites. By Wilfrid H. Hudleston, , , (Continued from Decade III. Vol. I. p. 204.) (PLATE VIII.) Littorina and Amberleya. THE group of shells figured on Plate VIII. (excepting Fig. 12,whose position is doubtful) constitute a natural section of tur-binate or trochiform species, which should be classed under one andthe same genus, or at most o
. Geological magazine. (oh t^. Mintern Bros. imp. Oxfordian L Lower Oolite Gasteropoda. (Ybrksliire) THE GEOLOGICAL MAGAZINE. NEW SERIES. DECADE III. VOL. I. No. VI.—JUNE, I.—Contributions to the PALiEONTOLOGY of the Toekshike Oolites. By Wilfrid H. Hudleston, , , (Continued from Decade III. Vol. I. p. 204.) (PLATE VIII.) Littorina and Amberleya. THE group of shells figured on Plate VIII. (excepting Fig. 12,whose position is doubtful) constitute a natural section of tur-binate or trochiform species, which should be classed under one andthe same genus, or at most only separated subgenerically. Theyare characterized, for the most part, by a conical spire, having arather wide angle; are few whorled, separated by a widish suture,and imperforate. The sculpture is rich, consisting of spiral bandsof more or less prominence, which sometimes constitute varices,single or double, as the case may be. These spiral bands are usuallygranulated or tuberculated, and are continued into the base of t
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