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A shelly fauna from the Snowdon volcanic series at Twll Ddu, Caernarvonshire
Author(s) -
Dean W. T.
Publication year - 1965
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350040206
Subject(s) - pyroclastic rock , pumice , series (stratigraphy) , fauna , geology , volcano , paleontology , affinities , archaeology , geochemistry , geography , ecology , chemistry , stereochemistry , biology
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.