Trigonus conicus
From dinoflaj3
"conicus" Banasová et al., 2007, p.111–113, pl.1, figs.9–12. Name not validly published, since it was merely used in anticipation of future acceptance of the name (I.C.N. Article 36.1). Taxonomic synonym: Calciconus irregularis, according to Streng et al. (2009, p.230). Age: middle Miocene.
Parent: Trigonus