Veryhachium trisulcum Appendix A

"*trisulcum" Deunff, 1951, p.323, caption to text-fig.3 ex Deunff, 1959, p.27–28, pl.1, figs.1–4,8,10,12–14,16–17,20,22–23.  Holotype: Deunff, 1959, pl.1, fig.4 (see Fensome et al., 1990, p.526).  Originally Hystrichosphaeridium trisulcum (name not validly published), subsequently Veryhachium trisulcum (name not validly published), thirdly Veryhachium trisulcum, fourthly Veryhachium trispinosum subsp. trisulcum (combination not validly published, Appendix A).  Taxonomic senior synonym: Hystrichosphaeridium (now Veryhachium) trispinosum, according to Stancliffe and Sarjeant (1994, p.233).  The nomenclatural type of the genus Veryhachium remains the holotype of Hystrichosphaeridium (subsequently Veryhachium) trisulcum.  The names Hystrichosphaeridium trisulcum and Veryhachium trisulcum were not validly published respectively in Deunff (1951, caption to text-fig.3) and Deunff (1954b, p.306), since no description was provided in the former publication and no illustration was provided in the latter publication.  This name was not validly published in Deunff (1954b, p.306) since no illustration was provided.  The name Hystrichosphaeridium trisulcum was not validly published in Deunff (1951, p.323) since no description was provided.  Cramer and Diez (1979, p.47) considered Veryhachium trisulcum (or Veryhachium trispinosum) to be the possible taxonomic senior synonym of Hystrichosphaeridium (now Deunffia) monacanthum.  Beju (1972, p.718) and Tynni (1976, p.38) misspelled the specific epithet as "trisulcatum".  Age: Middle Ordovician.

Parent: Veryhachium_Appendix A