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Miller et al., 1997

Miller, C. G., Sutherland, S. J. E., Dorning, K. J. 1997. Late Silurian (Ludlow–Přídolí) microfossils and sedimentation in the Welsh Basin near Clun, Shropshire. Geological Journal 32 (1), 69-83. | DOI | DETAILS

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ID4867
ReferenceMiller et al., 1997
AuthorMiller, C. G., Sutherland, S. J. E., Dorning, K. J.
Year1997
TitleLate Silurian (Ludlow–Přídolí) microfossils and sedimentation in the Welsh Basin near Clun, Shropshire
JournalGeological Journal
Volume32
Number1
pgs.69-83
Source typearticle in journal
LanguageEnglish
DOI10.1002/(SICI)1099-1034(199703)32:1<69::AID-GJ734>3.0.CO;2-Q
Abstract

The base of the Clun Forest Formation at Clun, Shropshire, has previously been taken to correlate with the base of the Downton Castle Sandstone Formation (Přídolí Series, upper Silurian) on the basis of brachiopod, bivalve, gastropod and ostracod faunas. The detailed distribution of microfossils (acritarchs, chitinozoans, conodonts and ostracods) is documented at Nantyrhynau Quarry, Clun, Shropshire, to test this correlation. Three new species of chitinozoans, Eisenackitina clunensisEisenackitina kerria and Angochitina paucispinosa, are described from the quarry. Macrofossil and ostracod distributions suggest that the correlation is correct. However, a typical Ludlow acritarch flora is present throughout the section and suggests that the basal part of the Clun Forest Formation is Ludlow in age. The mixture of characteristic Ludlow and Přídolí microfossils at Nantyrhynau Quarry may be the result of differing environmental conditions between the Ludlow (shelf) and Clun (basinal) areas at this time. Alternatively, the strata exposed at Nantyrhynau Quarry may represent a period towards the end of the Ludlow Series when there are no strata represented in corresponding shelf sections due to non‐deposition or erosion.


New taxa described

RankTaxon nameBelongs to
SpeciesAngochitina paucispinosa Miller, Sutherland et Dorning, 1997Angochitina
SpeciesEisenackitina clunensis Miller, Sutherland et Dorning, 1997Eisenackitina
SpeciesEisenackitina kerria Miller, Sutherland et Dorning, 1997Eisenackitina