Tectatodinium rugulatum
From dinoflaj3
"rugulatum" (Hansen, 1977, p.12–13, figs.20H–J) McMinn, 1988, p.152. Holotype: Hansen, 1977, figs.20H–J. Originally Xenicodinium, subsequently Tectatodinium. Taxonomic senior synonym: Tectatodinium pellitum, questionably according to Head (1994a, p.308), and according to Head and Nøhr-Hansen (1999, p.577). Age: Danian.