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The ordovician silurian boundary graptolite fauna of dobs linn southern scotland uk


, : The ordovician silurian boundary graptolite fauna of dobs linn southern scotland uk. Palaeontology (Oxford) 26(3): 605-640

The strata at Dob's Linn from the Extraordinarius Band of the Upper Hartfell Shale Formation to 2.3 m above the base of the Birkhill Shale Formation and their contained taxa are described and accurate faunal ranges provided. The boundary separating the Climacograptus? extraordinarius and Glyptograptus persculptus zones occurs within a 1.17 m thick unfossiliferous part of the succession. The boundary between the G. persculptus and Parakidograptus acuminatus zones is defined at 1.6 m above the base of the Birkhill Shale in the Linn Branch section, where Akidograptus ascensus and P. acuminatus s.l. first occur. A member of the G. venustus group is recorded from Britain for the first time. Accurate correlation is attempted with zonal sequences in central Asia, central China and eastern Canada.


Accession: 006728797

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Related references

Williams, SH., 1983: The Ordovician-Silurian boundary graptolite fauna of Dob's Linn southern Scotland. The strata at Dob's Linn from the Extraordinarius Band of the Upper Hartfell Shale Formation to 2.3 m above the base of the Birkhill Shale Formation and their contained taxa are described and accurate faunal ranges provided. The boundary sepa...

Finlay, A.; Selby, D.; Challands, T., 2008: Re-Os geochronology and end-Ordovician Os isotope composition of the Ordovician/Silurian Global Stratotype Section and Point, Dobs Linn, Scotland. This study further demonstrates the utility of Re-Os radioisotope geochronology to calibrate the geological time-scale, and map the evolution of the(187) Os/(188) Os composition of seawater using the Ordovician/Silurian (O-S) Global Stratotype Sec...

Muir, L.A.; Snelling, A.M.; Bates, D. ; Zalasiewicz, J.A., 2011: An unusual specimen of Glyptograptus from Dobs Linn Southern Uplands, Scotland, and a discussion of graptolite teratomorphies. A specimen of Glyptograptus from the Silurian of Dob's Linn is described that possessed a bifurcating virgula, with a biserial stipe along each virgula. The colony lived for some considerable time with this morphology, showing that at least s...

Williams S.H.nry; Lawson James D., 1992: Excursion 32; Dob's Linn; Upper Ordovician and Lower Silurian graptolite successions; Ordovician-Silurian boundary stratotype. Pages 440-462 1992

Williams, SH., 1982: The Late Ordovician graptolite fauna of the Anceps Bands at Dob's Linn, southern Scotland. Geologica et Palaeontologica, 16: 29-55

Williams, SH.; Ingham, JK., 1989: The Ordovician-Silurian boundary stratotype at Dob's Linn, southern Scotland. International Union of Geological Sciences Publication, 27-35 No. 23

Verniers, J.; Vandenbroucke, T.; Vanmeirhaeghe, J.; Man, Y., 2003: A restudy of the chitinozoans of the Ordovician/Silurian GSSP at Dobs Linn, Scotland UK and correlation with other sections on Avalonia in northern England and Belgium. Serie Correlacion Geologica, 18: 179-181

G.Mei yu, 1983: The graptolite fauna of the Ordovician-Silurian boundary section in Yuqian, Zhejiang. Pages 389-444 1983

Barnes, CR.; Williams, SH., 1988: Conodonts from the Ordovician-Silurian boundary stratotype, Dob's Linn, Scotland. Bulletin of the British Museum (Natural History) Geology, 43: 31-39

Cuerda, AJ.; Rickards, RB.; Cingolani, C., 1988: A new Ordovician-Silurian boundary section in San Juan Province, Argentina, and its definitive graptolite fauna. Journal of the Geological Society (London): 1455: 749-757