Abstract

New forms of hystrichospheres from upper Jurassic strata in the vicinity of Weymouth, Dorsetshire, southern England, are classified and described as Hystrichosphaeridium cribrotubiferum n.sp., Baltisphaeridium downiei n.sp., B. lumectum n.sp., Polystephanosphaera valensii n.g. n.sp., and P. paracalathus n.g. n.sp.

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