Clarification of the systematic position of two calcareous dinoflagellate taxa belonging to the genus Calciodinellum (Dinophyceae, Peridiniales)

In an attempt to tidy up some previously published nomenclaturalinconsistencies in their index of fossil dinoflagellates, Fensome and Williams (2004)inadvertently proposed transfers to two taxa that are not consistentwith 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 1999to Pernambugia as Pernambugia tuberosa forma variospinosa . Inorder to clarify the systematics of these taxa and bring thetaxonomy into line with current concepts, we herein proposethe new combinations Calciodinellum elongatum and Calciodinellumlevantinum forma variospinosum .