'Weybourne Crag', an Important Marker Horizon in the Early
Quaternary Science Reviews 2020 (vol. 236) The palaeontology and dating of the ‘Weybourne Crag’, an important marker horizon in the Early Pleistocene of the southern North Sea basin Richard C.Preecea, Tom Meijerb, Kirsty E.H. Penkmanc, Beatrice Demarchicd, David F. Mayhewb1, Simon A. Parfittef a Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, UK b Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA, Leiden, The Netherlands c BioArCh, Departments of Archaeology and Chemistry, University of York, York, YO10 5DD, UK d Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy e Institute of Archaeology, University College London, 31-34 Gordon Square, London, WC1H 0PY, UK f Department of Earth Sciences, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK 1 Deceased October 3, 2012. Highlights An updated account of the Mollusca and mammals from the Weybourne Crag in the UK and NL. A Macoma balthica–Mya arenaria concurrent range zone is defined, tracable across the North Sea. The small mammals from the Weybourne Crag and its correlatives belong to Mammal biozone MNR1. Details of the first British records of the voles Mimomys hordijki and Ungaromys dehmi are provided. Amino acid dating supports the contemporaneity of the Macoma balthica–Mya arenaria concurrent range zone. Amino acid data indicate that the Baventian cold stage post-dates the Bramertonian. The Baventian and „Pre-Pastonian a‟ (Weybourne Crag) appear to be distinct cold stages. Revised age for the „Weybourne Crag‟ has implications for the duration of the Norwich Crag and the Tiglian. Abstract In the North Sea basin the marine bivalve Macoma balthica first appears within the Early Pleistocene „Weybourne Crag‟, which forms an important biostratigraphical datum.
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