Abstract
LONDON. Geological Society, Mar. 26.—W. Campbell Smith: A classification of some rhyolites, trachytes, and phono-lites from part of Kenya Colony, with a note on some associated basaltic rocks. Comparison of specimens collected on two expeditions by Prof. J. W. Gregory in 1893 and 1919, previously described by Dr. G. T. Prior (1903) and Miss A. T. Neilson (1921), supported by some new analyses, has led to a revision of the nomenclature.—T. N. George: Amboccelia Hall and certain similar British Spiriferidse. The British forms do not exhibit the features emphasised by Hall in his description of Ambocodia; in particular, they differ in the surface-ornament, in the cardinal process, and in the musculature of the dorsal valve. Two new genera, distinguished one from the other by details of ornament and cardinal area, are therefore established for their reception, and it is proposed to create a new subfamily for the reception of Amboccelia and the new genera. The later portion of the paper consists of a detailed description of the British species from the Devonian, Carboniferous, and Permian systems. Some of these are new.
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Societies and Academies. Nature 125, 693–694 (1930). https://doi.org/10.1038/125693a0
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DOI: https://doi.org/10.1038/125693a0