Canningia minor subsp. minor

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"subsp. minor".  Autonym.  Holotype: Cookson and Hughes, 1964, pl.8, fig.1.  NOW Kallosphaeridium? helbyi subsp. helbyi.  Originally Canningia? minor subsp. minor, subsequently Chytroeisphaeridia minor subsp. minor, thirdly (and now) Kallosphaeridium? helbyi subsp. helbyi.

Parent: Canningia minor