In an attempt to tidy up some previously published nomenclatural inconsistencies in their index of fossil dinoflagellates, Fensome and Williams (2004) inadvertently proposed transfers to two taxa that are not consistent with the current understanding of calcareous dinoflagellates. They proposed the transfers of Sphaerodinella? tuberosa forma elongata Hildebrand-Habel, Willems and Versteegh 1999 to Pernambugia as Pernambugia tuberosa forma elongata, and Sphaerodinella? tuberosa forma variospinosa Hildebrand-Habel, Willems and Versteegh 1999 to Pernambugia as Pernambugia tuberosa forma variospinosa. In order to clarify the systematics of these taxa and bring the taxonomy into line with current concepts, we herein propose the new combinations Calciodinellum elongatum and Calciodinellum levantinum forma variospinosum.
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