Kallosphaeridium helbyi subsp. helbyi

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subsp. helbyi.  Autonym.  Holotype: Cookson and Hughes, 1964, pl.8, fig.1.  Originally Canningia? minor subsp. minor, subsequently Chytroeisphaeridia minor subsp. minor, thirdly (and now) Kallosphaeridium? helbyi subsp. helbyi.  Age: Late Albian-Early Cenomanian.Kallosphaeridium helbyi