Palaeoperidinium velatum
From dinoflaj2
"?velatum" Conrad, 1941, p.8-9, pl.1, fig.A. Holotype: Conrad, 1941, pl.1, fig.A. Name not validly published: generic name not validly published until 1967. NOW Trithyrodinium?. Originally Palaeoperidinium (name not validly published), subsequently Scriniodinium?, thirdly Palaeoperidinium? (combination not validly published), fourthly (and now) Trithyrodinium?. Questionable assignment: Stover and Evitt (1978, p.218) as a problematic species. This combination was not validly published in Stover and Evitt (1978, p.218) since these authors did not fully reference the basionym. Age: Maastrichtian.
Parent: Palaeoperidinium