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Systematic Revision of Elektoriskos williereae and Dilatosphaera williereae (Acritarchs) and its Bearing on Silurian (Llandoverian) Stratigraphy
Martin, F. (1989). Systematic Revision of Elektoriskos williereae and Dilatosphaera williereae (Acritarchs) and its Bearing on Silurian (Llandoverian) Stratigraphy. Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 59: 5-14
In: Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. Aardwetenschappen = Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre. KBIN: Brussel. ISSN 0374-6291, more
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Keywords
Author keywords
    Elektoriskos williereae, Dilatisphaera williereae, Acritarchs, Silurian, Llandovery, Acritarches, Silurien.

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  • Martin, F.

Abstract
    Revision of Elektoriskos williereae (G. & M. DEFLANDRE) VANGUESTAINE, 1979 and Dilatisphaera williereae (MARTIN) LISTER, 1970, the primary types Of which come from the Brabant Massif in Belgium, underlines the evidence for their stratigraphic value in the Llandovery, lowest Series of the Silurian. Data indicate that in Belgium and Great Britain the species appear, respectively, slightly above the base of the Rhuddanian and in the upper part of the Aeronian. The stratigraphic level at which they appear in eastern North America, although less well documented, is compatible with the above.

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