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V.—Note on the Occurrence of Ammonites Jurensis in the Ironstone of the Northampton Sands in the Neighbourhood of Northampton
Published online by Cambridge University Press: 01 May 2009
Extract
Considerable doubt having been expressed with regard to the occurrence of the zone of Ammonites jurensis in the neighbourhood of Northampton, much interest attaches to the discovery, by Mr. T. Jesson of Great Houghton, of the typical Ammonite in some abundance in this area. It is perhaps remarkable that there should have been any doubt about the matter, seeing that in Samuel Sharp's earlier paper Am. jurensis was recorded among the fossils from Duston, and this should have stimulated further search when the doubt arose which seems to have caused this species to be omitted from the later paper by the same author, in which some palæontological errors of the earlier paper were said to be corrected.
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References
page 493 note 1 Q J.G.S. vol. xxvi. p. 354, 1870.Google Scholar
page 493 note 2 Q.J.G.S. vol. xxix. p. 296, 1873.Google Scholar
page 493 note 3 Record of Excursions, London, 1891, p. 452.Google Scholar
page 493 note 4 Journ. Northamptonshire Nat. Hist. Soc. vol. v. p. 54, 1888.Google Scholar
page 494 note 1 Pal. Soc., Lias Ammonites, pl. lxxix.
page 494 note 2 Pal. Soc. Inferior Oolite Ammonites, pl. xiii.
page 494 note 3 Pal. Soc. Lias Ammonites, pl. lxxv. figs 1–3.
page 494 note 4 This paper was read in Section (C) Geology, Brit. Assoc. Cardiff, Aug. 1891.