Marine flooding events of the Early and Middle Ordovician of Oman and the United Arab Emirates and their graptolite, acritarch and chitinozoan associations von Rickards, Barrie R, Booth, Graham A, Paris, Florentin, Heward, Alan P

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Polymorphic organization in a planktonic graptoloid (Hemichordata, Pterobranchia) colony of Late Ordovician age von Zalasiewicz, Jan A, Page, Alex, Rickards, R. Barrie, Williams, Mark, Wilby, Philip R, Howe, Michael P. A, Snelling, Andrea M

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Marine Flooding Events of the Early and Middle Ordovician of Oman and the U.A.E. and their Graptolite, Acritarch and Chitinozoan Faunas von Rickards, Barrie R., Booth, Graham A., Paris, Florentin, Heward, Alan P.

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Upper Ordovician chitinozoan biostratigraphy from the type Ashgill area (Cautley district) and the Pus Gill section (Dufton district, Cross Fell Inlier), Cumbria, Northern England von VANDENBROUCKE, THIJS R. A., RICKARDS, BARRIE, VERNIERS, JACQUES

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