Tanyosphaeridium variecalamum
From dinoflaj3
*variecalamum Davey and Williams, 1966b, p.98–99, pl.6, fig.7; text-fig.20. Holotype: Davey and Williams, 1966b, pl.6, fig.7; text-fig.20; Fauconnier and Masure, 2004, pl.80, figs.1–2. Age: Cenomanian.