Exochosphaeridium striolatum subsp. striolatum
From dinoflaj2
"subsp. striolatum". Autonym. Holotype: Deflandre, 1937b, pl.15 (al. pl.12), fig.1. NOW Coronifera striolata subsp. striolata. Originally Exochosphaeridium striolatum subsp. striolatum, subsequently (and now) Coronifera striolata subsp. striolata. Age: Late Cretaceous. Parent: Exochosphaeridium striolatum