Systematics of benthic foraminifera in Sundarban marshes, West Bengal

Abstract

The marsh zones of Sunderban coast were examined for modern benthic foraminiferal assemblages. A total of 10 genera of foraminifera were recorded from the region. Ammonia is the most abundant genus among all other types. Agglutinated foraminifera like Trochammina spp., Miliammina spp.and Haphlophragmoides spp.indicate the high marsh environments. Calcareous foraminifera like Haynesina spp., Cribroelphidium spp., Ammonia spp., and Quinqueloculina sp., Nonionella spp., characterize low marsh conditions.