Veryhachium trispinosum Appendix A
+trispinosum (Eisenack, 1938a, p.14,16; text-figs.2-3) Stockmans and Willière, 1962a, p.46-47. Emendation: Stancliffe and Sarjeant, 1994, p.233, as Veryhachium trispinosum. Holotype: Eisenack, 1938a, text-fig.2, lost according to Eisenack et al. (1979, p.499). Neotype: Deunff, 1980, pl.1, fig.7, designated by Stancliffe and Sarjeant (1994, p.233). Originally Hystrichosphaeridium, subsequently (and now) Veryhachium, thirdly Baltisphaeridium (Appendix A), fourthly Micrhystridium (combination not validly published, Appendix A). This species was retained in Veryhachium by Cramer and Diez (1979, p.59). Taxonomic junior synonyms: Veryhachium cucruse Timofeev, 1962, an acritarch species, according to Martin (1969, p.106); Veryhachium arctatum Deunff, 1981, Veryhachium concavum Piskun, 1974a, Veryhachium edenense Colbath, 1979, Veryhachium microgranuliferum Piskun, 1974a and Hystrichosphaeridium (ultimately Veryhachium) trisulcum, all acritarch species, and all according to Stancliffe and Sarjeant (1994, p.233). The nomenclatural type of the genus Veryhachium remains the holotype of Hystrichosphaeridium (ultimately Veryhachium) trisulcum. This combination was not validly published in Deunff (1954b, p.306) and Stockmans and Willière (1960, p.2,5-6), since these authors did not fully reference the basionym. It was not validly published in Deunff (1954b) additionally since that author did not clearly use the name Veryhachium trispinosum. Cramer and Diez (1979, p.47) considered Veryhachium trispinosum (or Veryhachium trisulcum) to be the possible taxonomic senior synonym of Hystrichosphaeridium (now Deunffia) monacanthum. Age: Silurian (erratic).
Parent: Veryhachium_Appendix A
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