Английская Википедия:Hirnant Limestone

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Шаблон:Cleanup bare URLs Шаблон:Infobox rockunit The Hirnant Limestone is an old name for a geologic formation in England and Wales, defining the Hirnantian. It preserves fossils dating back to the Ordovician period.[1] It is now classified as the Hirnant Limestone Member of the Foel Y Ddinas Mudstones Formation.[2]

See also

References

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Further reading