{"refrec":{"BRefID":231481,"RR":"<b>Vandenbroucke, T.R.A.; Hennissen, J.; Zalasiewicz, J.A.; Verniers, J.</b> (2008). New chitinozoans from the historical type area of the Hirnantian Stage and additional key sections in the Wye Valley, Wales, UK. <i>Geol. J. 43(4)</i>: 397-414. <a href=\"http://dx.doi.org/10.1002/gj.1109\" target=\"_blank\">dx.doi.org/10.1002/gj.1109</a>","BEntID":223193,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Geol. J. 43(4)</i>: 397-414. <a href=\"https://dx.doi.org/10.1002/gj.1109\" target=\"_blank\">https://dx.doi.org/10.1002/gj.1109</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Vandenbroucke, T.R.A.; Hennissen, J.; Zalasiewicz, J.A.; Verniers, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Vandenbroucke, T.R.A. <i>et al.</i>","Englishabstract":"The type locality for several core elements of the <i>Hirnantia</i> brachiopod fauna is a small disused quarry on the western slopes of Cwm Hirnant. There, the Hirnant Limestone Member of the Foel-y-Ddinas Mudstone Formation yields a new, well-preserved chitinozoan assemblage, attributed to the <i>Spinachitina taugourdeaui</i> Biozone. This allows tight correlation with the Hirnantian of Baltica and Laurentia and neatly ties the chitinozoan zonation with the classical brachiopod fauna. Nearby, the chitinozoan assemblage from the Caradoc Cymerig Limestone Member at Gelli-grîn belongs to the <i>Spinachitina cervicornis</i> Biozone?, and is identical to that recovered from the Burrellian in the Onny Valley, Welsh Borderland. A Silurian assemblage higher up section, discovered in the Cwm-yr-Aethnen Formation, is attributed to the globally recognized <i>Eisenackitina dolioliformis</i> Biozone. Attempts to integrate the chitinozoan and graptolite biozonation, in the central Welsh Rhayader area, were less successful.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"New chitinozoans from the historical type area of the Hirnantian Stage and additional key sections in the Wye Valley, Wales, UK","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"biostratigraphy; stratotype; chitinozoans; upper ordovician; hirnantian;wales","OtherDescriptors":null,"Notes":null,"AnaPub":2008,"MonPub":null,"DateUpdate":"2015-11-04","DateCreate":"2013-12-01","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000259626800001","VABBcode":null,"OpenAcc":0,"DOI":"10.1002/gj.1109"},"refs":null,"anarec":{"AnaID":231481,"PubliDate":2008,"Pagination":"397-414","XtraPublOfAnaID":null,"ISBN":null,"Volume":"43","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42910,"SerRR":"Geological Journal. 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