Surculosphaeridium spinicongregatum
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spinicongregatum Yun Hyesu, 1981, p.40, pl.16, figs.2,6. Holotype: Yun Hyesu, 1981, pl.16, fig.6; Fensome et al., 1991, fig.2 — p.753; Fauconnier and Masure, 2004, pl.74, fig.7. Age: early Santonian.
Parent: Surculosphaeridium