Hystrichosphaeridium choanophorum

"choanophorum" Deflandre and Cookson, 1955, p.271–272; text-figs.23–29.  Emendation: Harland and Hill, 1979, p.39,41, as Melitasphaeridium choanophorum. Holotype: Deflandre and Cookson, 1955, text-figs.23–26; Fensome et al., 1993a, figs.1–4 — p.1055.  NOW Melitasphaeridium.  Originally Hystrichosphaeridium, subsequently (and now) Melitasphaeridium.  Taxonomic junior synonym: Melitasphaeridium aequabile, according to Harland, Head and Wrenn in Head and Wrenn (1992, p.10).  This name was not validly published in Deflandre and Cookson (1954, p.1236), since these authors did not provide a description.  Age: Pliocene.

Parent: Hystrichosphaeridium