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Appendix A

Veryhachium trispinosum subsp. geometricum

"Veryhachium trispinosum subsp. geometricum" (Deflandre, 1945a, p.64-65, pl.2, figs.2-5) Tynni, 1982, p.84.

TYPE: Holotype: Deflandre, 1945a, pl.2, fig.2.

STATUS: Combination not validly published: basionym not fully referenced.

HISTORY: 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.


Infraspecific taxa:


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