Heterosphaeridium latoaculeum
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"latoaculeum" (Yun Hyesu, 1981, p.42–43, pl.11, figs.17–19) Islam, 1993, p.84. Holotype: Yun Hyesu, 1981, pl.11, fig.18; Fensome et al., 1991, fig.2 — p.657; fig.2 — p.693 (mislabelled as Cleistosphaeridium multifurcatum subsp. multifurcatum); Fensome et al., 1993a, fig.2 — p.1261; Fauconnier and Masure, 2004, pl.35, figs.9–10. NOW Circulodinium latoaculeum. Originally Cleistosphaeridium multifurcatum subsp. latoaculeum, subsequently Heterosphaeridium latoaculeum, thirdly (and now) Circulodinium latoaculeum. Age: early Santonian.
Parent: Heterosphaeridium