Dapsilidinium ambiguum subsp. pertusum
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"subsp. pertusum" (Davey, 1969a, p.156-157, pl.7, figs.6-7,9) Lentin and Williams, 1993, p.156. Holotype: Davey, 1969a, pl.7, fig.7. NOW Sepispinula pertusa. Originally Cleistosphaeridium huguoniotii var. pertusum, subsequently Cleistosphaeridium huguoniotii subsp. pertusum, thirdly Cleistosphaeridium huguoniotii subsp. pertusum, fourthly Dapsilidinium ambiguum subsp. pertusum, fifthly Sepispinula huguoniotii subsp. pertusa, sixthly (and now) Sepispinula pertusa. Age: Late Cenomanian. Parent: Dapsilidinium ambiguum
