Cleistosphaeridium ancoriferum

"ancoriferum" (Cookson and Eisenack, 1960a, p.8, pl.2, fig.11) Davey et al., 1966, p.167.  Emendation: Cookson and Eisenack, 1968, p.119–120, as Cleistosphaeridium ancoriferum.  Holotype: Cookson and Eisenack, 1960a, pl.2, fig.11.  NOW Sepispinula.  Originally Hystrichosphaeridium, subsequently Cleistosphaeridium, thirdly (and now) Sepispinula.  Taxonomic senior synonym: Micrhystridium (as Polysphaeridium, now Sepispinula?) ambiguum, according to Yun Hyesu (1981, p.44) and Schiøler and Wilson (1998, p.328) — however, Masure in Fauconnier and Masure (2004, p.499) retained Sepispinula ancorifera.  Taxonomic senior synonym: Hystrichosphaeridium (now Sepispinula?) huguoniotii, according to Clarke and Verdier (1967, p.54) — however, Masure in Fauconnier and Masure (2004, p.499) retained Sepispinula ancorifera Age: Albian–Cenomanian.

Parent: Cleistosphaeridium