Horologinella biconvexa subsp. laevigata
From dinoflaj2
subsp. laevigata Zheng Yuefang and Liu Xuexian in Liu Zhili et al., 1992, p.69-70, pl.10, figs.1-2. Holotype: Liu Zhili et al., 1992, pl.10, fig.2. Age: early Tertiary. Parent: Horologinella biconvexa
