. Geological magazine. ere seems no alternative but to adopt Sowerbysname for the fossil so long known in collections as Natica tumidula,PhiL^ Description.—Specimen from the Dogger (zone 1), Peak (BlueWyke)—Jermyn Street Museum. Figs. 4a, 46. Height 15 millimetres. Eatio of body-whorl to entire height .... about 85 : angle 125°. Shell transversely oval, tumid, imperforate. The spire consists ofa small button-like apex, which expands within the course of twoor three widely separated volutions into a very large body-whorl; ^ The fact that the Ancliff Oolite was supposed to be of Great
. Geological magazine. ere seems no alternative but to adopt Sowerbysname for the fossil so long known in collections as Natica tumidula,PhiL^ Description.—Specimen from the Dogger (zone 1), Peak (BlueWyke)—Jermyn Street Museum. Figs. 4a, 46. Height 15 millimetres. Eatio of body-whorl to entire height .... about 85 : angle 125°. Shell transversely oval, tumid, imperforate. The spire consists ofa small button-like apex, which expands within the course of twoor three widely separated volutions into a very large body-whorl; ^ The fact that the Ancliff Oolite was supposed to be of Great Oolite age may havehad something to do with the unwillingness of some excellent authorities to recognizethe relationship of Natica tumidula to Nerita minuta. Although I have madenumerous inquiries, I have never been able to obtain any very satisfactory account ofthe beds whence Sowerby obtained his Ancliff fossils, mostly, I believe, eithermicromorphs or very small species. Geol Mag. 1884. Decade III PL 3a--
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