Hystrichosphaeridium eoplanctonicum

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"eoplanctonicum" Eisenack, 1955, p.178-179, pl.4, fig.14.  Holotype: Eisenack, 1955, pl.4, fig.14.  NOW Oppilatala (Appendix A).  Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Multiplicisphaeridium (Appendix A), fourthly (and now) Oppilatala (Appendix A).  Taxonomic junior synonym: Multiplicisphaeridium septispinosum Lister, 1970, an acritarch species, according to Eisenack et al. (1973, p.617).  Age: Silurian (Late Ludlow).

Parent: Hystrichosphaeridium