Notes on the Graptolite Faunas of the Upper Ordovician and Lower Silurian
- 1 January 1929
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 66 (1) , 1-27
- https://doi.org/10.1017/s0016756800099763
Abstract
Work by the author on the rocks of the Upper Ordovician and Lower Silurian in Central Wales has led to a comparison with deposits of similar horizons in other areas. Several points of interest have arisen out of the investigation and may be of value in delimiting the zones of the Upper Ordovician and also in indicating the best workable definition of the base for the Silurian.Keywords
This publication has 2 references indexed in Scilit:
- XLVII.—On the structure of Glyptograptus aff. tamariscus (Nicholson)Annals and Magazine of Natural History, 1927
- The Relation of the Ordovician and Silurian Rocks of Conway, North WalesQuarterly Journal of the Geological Society, 1909