Veryhachium trispinosum subsp. geometricum Appendix A

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"subsp. geometricum" (Deflandre, 1945a, p.64-65, pl.2, figs.2-5) Tynni, 1982, p.84.  Holotype: Deflandre, 1945a, pl.2, fig.2.  Combination not validly published: basionym not fully referenced.  NOW Striatotheca geometrica (Appendix A).  Originally Hystrichosphaeridium geometricum, subsequently Veryhachium geometricum (Appendix A), thirdly Veryhachium trispinosum subsp. geometricum (combination not validly published), fourthly (and now) Striatotheca geometrica (Appendix A).  Age: Mid Silurian.

Parent: Veryhachium trispinosum_Appendix A

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