Adnatosphaeridium vittatum
From dinoflaj3
*vittatum Williams and Downie, 1966c, p.215, pl.24, figs.3,7; text-fig.56. Holotype: Williams and Downie, 1966c, pl.24, fig.7; text-fig.56. Taxonomic junior synonym: Adnatosphaeridium multispinosum, according to Fensome et al. (2009, p.13). Age: early Eocene.