Callaiosphaeridium trycherium
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trycherium Duxbury, 1980, p.114, pl.11, figs.6,9. Holotype: Duxbury, 1980, pl.11, fig.6. Age: Barremian.
trycherium Duxbury, 1980, p.114, pl.11, figs.6,9. Holotype: Duxbury, 1980, pl.11, fig.6. Age: Barremian.