A shelly fauna from the Snowdon volcanic series at Twll Ddu, Caernarvonshire

1 January 1965

journal article
research article
Published by Wiley in Geological Journal

Vol. 4 (2) , 301-314
https://doi.org/10.1002/gj.3350040206

Abstract

Trilobites and brachiopods are described and figured from the Caradoc Series of the Twll Ddu district, northeast of Snowdon. They indicate a Longvillian age for the Banded Pumice Tuffs of the Bedded Pyroclastic Series, and exhibit affinities with corresponding faunas in South Shropshire as well as other parts of North Wales and Northern England.

Keywords

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