Micrhystridium ambiguum Appendix A

"ambiguum" Deflandre, 1937b, p.81, pl.16 (al. pl.13), figs.8–9.  Holotype: Deflandre, 1937b, pl.16 (al. pl.13), fig.8; Fauconnier and Masure, 2004, pl.71, figs.6–7.  NOW Sepispinula?.  Originally Micrhystridium, subsequently Cleistosphaeridium, thirdly Polysphaeridium, fourthly Chlamydophorella, fifthly Dapsilidinium, sixthly Gorgonisphaeridium (Appendix A), seventhly (and now) Sepispinula?. Taxonomic junior synonyms: Hystrichosphaeridium (now Sepispinula?) huguoniotii, according to Clarke and Verdier (1967, p.54) and Hystrichosphaeridium (now Sepispinula) ancoriferum, both according to Yun Hyesu (1981, p.44) and Schiøler and Wilson (1998, p.328) — however, Masure in Fauconnier and Masure (2004, p.499–500) retained Sepispinula ancorifera and Sepispinula? huguoniotii.  Age: Late Cretaceous.

Parent: Micrhystridium_Appendix A