Palaeoperidinium rhomboidale

"rhomboidale" Górka, 1965, p.301–302, pl.1, figs.6a–b. Holotype: Górka, 1965, pl.1, figs.6a–b; Jan du Chêne et al., 1986a, pl.121, figs.14–15. Name not validly published: generic name not validly published until 1967. NOW Trichodinium?. Originally Palaeoperidinium (name not validly published), subsequently (and now) Trichodinium?. Age: early Kimmeridgian.