Data from: The effect of bioturbation by polychaetes (Opheliidae) on benthic foraminiferal assemblages and test preservation

José N. Pérez-Asensio, Julio Aguirre & Francisco J. Rodríguez-Tovar
Biological activity such as burrowing can alter benthic foraminiferal shell preservation and may also modify benthic foraminiferal assemblages by vertical mixing, inducing sediment homogenization. Here, we analyse benthic foraminiferal assemblages and taphonomy of upper Miocene marine deposits from Conil de la Frontera (Cádiz, south-western Spain). The deposits consist of marls displaying a pervasive alternation of intensively bioturbated beds dominated by Macaronichnus segregatis traces (ichnofabric index 4–5) and non-bioturbated beds. Benthic foraminiferal assemblages are dominated by...
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