Prolixosphaeridiopsis spissus gen. et comb. nov. for the dinoflagellate cyst Cleistosphaeridium spissum McIntyre & Brideaux, 1980
Abstract. The monotypic genus Prolixosphaeridiopsis gen. nov. is created for the taxon Cleistosphaeridium spissum McIntyre & Brideaux, 1980 which has previously been questionably assigned to Prolixosphaeridium Davey et al., 1966.