Dinopterygium fehmarnense
From dinoflaj3
"fehmarnense" (Lentin and Williams, 1973, p.67) Stover and Evitt, 1978, p.205. Name not validly published: no holotype designated. NOW Heteraulacacysta. Originally Heteraulacacysta (name not validly published), subsequently Dinopterygium (name not validly published), thirdly (and now) Heteraulacacysta. Age: early Eocene.