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Published online by Cambridge University Press: 01 May 2009
The Speeton Clay of Yorkshire is of considerable interest, as it is the chief marine representative of the Lower Cretaceous formations in England. It has been the subject of important papers by Professor J. W. Judd, F.R.S., and Mr. G. W. Lamplugh, F.R.S., while the palæontology of the Cephalopoda and Lamellibranchiata has been respectively worked out by Professor A. P. Pavlow and Mr. H. Woods. Mr. C. G. Danford has also contributed to our knowledge of the beds. The Microzoa, however, have never been examined, and the present paper gives the results of an investigation of the Foraminifera of the deposit.
page 216 note 1 [Plates XVIII and XIX have been unavoidably delayed and will appear with the subsequent portion of this paper.—Ed.]
page 216 note 2 Judd, J. W., “On the Speeton Clay”: Q.J.G.S., vol. xxiv, pp. 218–50, 1868.CrossRefGoogle Scholar “Additional Observations on the Neocomian Strata of Yorkshire and Lincolnshire, with Notes on their Relations to the Beds of the same age throughout Northern Europe”: Q.J.G.S., vol. xxiv, pp. 326–48, 1868.
page 216 note 3 Lamplugh, G. W., “On the Subdivisions of the Speeton Clay”: Q.J.G.S., vol. xlv, pp. 575–618, 1889.CrossRefGoogle Scholar “On the Speeton Series in Yorkshire and Lincolnshire”: Q.J.G.S., vol. lii, pp. 179–220, 1896.
page 216 note 4 In Pavlow, A. & Lamplugh, G. W., “Les Argiles de Speeton et leur Équivalents”: Bull. Soc. Imp. des Naturalistes de Moscou, N.S., vol. v, pp. 181–276, 455–570, 1891–1892.Google Scholar
page 216 note 5 Woods, H., A Monograph of the Cretaceous Lamellibranchiata of England (Pal. Soc.), 1899–1913.Google Scholar
page 216 note 6 Danford, C. G., “Notes on the Belemnites of the Speeton Clay”: Trans. Hull Geol. Soc., vol. vi, pt. iii, pp. 1–18 (plates), 1905Google Scholar [1906]. Also “Notes on the Speeton Ammonites”: Proc. Yorks Geol. Soc., vol. xvi, pt. i, pp. 101–14 (plates), 1906 [1907]; and other papers.
page 217 note 1 Q.J.G.S., vol. xlv, p. 581, 1889.
page 218 note 1 “On the Classification of the Strata between the Kimeridgian and Aptian”: Q.J.G.S., vol. lii, pp. 542–55, pl. xxvii, 1896.Google Scholar
page 218 note 2 A recent paper by Salfeld, Hans Dr. (Q.J.G.S., vol. lxix, pp. 423–32, pls. xli, xlii, 1913)CrossRefGoogle Scholar indicates that Portlandian beds may be present in this division of the Speeton Clay.