Kallosphaeridium spongiosum
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?spongiosum Batten and Lister, 1988, p.344–345, figs.4e–h. Holotype: Batten and Lister, 1988, figs.4e–g. Questionable assignment: Batten and Lister (1988, p.344). Age: late Hauterivian.
Parent: Kallosphaeridium