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Leptolepid otoliths from the Hauterivian (Lower Cretaceous) Lower Weald Clay (southern England)
Institution:1. Botanical Department of the Hungarian Natural History Museum, H-1476 Budapest, PO Box 222, Hungary;2. W. Szafer Botanical Institute, Polish Academy of Sciences, ul. Lubicz 46, 31-512 Kraków, Poland;3. Eötvös University, Biological Institute, Department of Plant Anatomy, Pázmány P. stny 1/C, H-1117 Budapest, Hungary;1. Department of Geology and Environmental Sciences, University of Akron, Akron, OH 44325-4101, United States;2. Center for Integrative Geosciences, University of Connecticut, Beach Hall Room 225, 354 Mansfield Road Unit 1045, Storrs, CT 06269, United States
Abstract:Teleostean saccular otoliths from the upper part of the late Hauterivian Lower Weald Clay Formation of the Wealden Supergroup exposed at Langhurstwood Quarry, West Sussex, UK, and Clockhouse Brickworks, Surrey, UK are described for the first time. Two new species of the genus Leptolepis, Leptolepis wealdensis and Leptolepis toyei are described. Many of the specimens are densely packed on individual bedding planes and they are interpreted as coprocoenotic accumulations. Additional mechanisms of deposition and concentration are discussed, in particular wave action. Ontogenetic series show isometric growth of the otoliths, and some specimens show growth rings on two orders of magnitude.
Keywords:Hauterivian  Teleost  Coprocoenosis  Wealden  Leptolepid  Otolith
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