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The Flora of the Upper Westphalian in Yorkshire
Published online by Cambridge University Press: 01 May 2009
Extract
The base of the Phillipsi Zone, which Professor Trueman has made the base of his Upper Westphalian, is taken at the horizon of the Shafton Marine Band in Yorkshire (1) 1 and in consequence the following beds are included in this zone:—
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References
REFERENCES
(1) Trueman, A. E. “A Suggested Correlation of the Coal Measures of England and Wales,” Proc. S. Wales Inst. Eng., 1933, 3.Google Scholar
(2) Crookall, R. “The Relative Value of Fossil Plants in the Stratigraphy of the Coal Measures,” Mem. and Proc. Manchester Lit. and Phil. Soc., lxxvi, 1932, 111–15.Google Scholar
(7) Wray, D. A., and Trueman, A. E. “The Non-Marine Lamellibranchs of the Upper Carboniferous of Yorkshire and their Zonal Sequence,” Summ. Prog. Geol. Surv. for 1930, pt. iii, 1931, 90.Google Scholar