Polysphaeridium majus

"?majus" (Lejeune-Carpentier, 1940, p.B220-B221; text-fig.13) Davey and Williams, 1969, p.6.  Emendation: Lejeune-Carpentier and Sarjeant, 1981, p.12, as Amphorosphaeridium majus.  Holotype: Lejeune-Carpentier, 1940, text-fig.13; Streel et al., 1977, pl.1, fig.7; Lejeune-Carpentier and Sarjeant, 1981, pl.2, figs.6-7; text-fig.7.  NOW Exochosphaeridium.  Originally Hystrichosphaeridium, subsequently Polysphaeridium?, thirdly Cordosphaeridium, fourthly Dapsilidinium? (combination not validly published), fifthly Amphorosphaeridium, sixthly (and now) Exochosphaeridium.  Questionable assignment: Davey and Williams (1969, p.6).  Taxonomic junior synonyms: Baltisphaeridium (as Exochosphaeridium) bifidum and Exochosphaeridium bifidum var. involutum (as Exochosphaeridium bifidum subsp. involutum), both according to Peyrot (2011, p.284).  This combination, as a questionable assignment, was not validly published in Davey and Williams (1966b, p.95), since these authors did not fully reference the basionym.  Age: Late Cretaceous.

Parent: Polysphaeridium