A new neoselachian shark from the marine Early Cretaceous of Southern England |
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| Institution: | 1. 2, Batts Hill, Redhill, Surrey RH1 2DH, UK;2. Earth Sciences Department, The Natural History Museum, Cromwell Road, London SW7 5BD, UK;3. 146, Church Hill Road, Cheam, Sutton, Surrey SM3 8NF, UK;1. Higher Marsh Farm, Marsh Lane, Henstridge, Somerset BA8 0TQ, UK;2. Department of Earth Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK;3. Institute of Geology, Mineralogy and Geophysics, Ruhr-Universität Bochum, Universitätsstrasse 150, D-44801 Bochum, Germany;1. British Geological Survey, Maclean Building, Wallingford OX10 8BB, UK;2. University of Göttingen, Goldschmidtstraße 3, 37077 Göttingen, Germany |
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| Abstract: | Rare, isolated teeth of Corysodon multicristatus sp. nov. are described from two levels in the Atherfield Clay Formation (Early Aptian, Early Cretaceous) of Atherfield Point on the Isle of Wight, UK. Ten teeth of the new species were recovered from 1095 kg of washed and graded sediment residues. The teeth themselves are very small (around 0.5 mm high) and possess a distinctive crown bearing a tiered series of transverse crests adapted for rasping. Details of the dental architecture of the Atherfield Clay Formation specimens clearly indicate that the Cretaceous material differs significantly from the teeth of the type species for the genus, Corysodon cirinensis, recorded from the Kimmeridgian of northern France and Switzerland. C. multicristatus is the first substantiated record of the genus from the Early Cretaceous, thereby extending the stratigraphic range of the genus from the latest Jurassic, and the geographical range from continental Europe to the UK. |
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